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/Problem19_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:17:03,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:17:03,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:17:03,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:17:03,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:17:03,162 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:17:03,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:17:03,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:17:03,169 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:17:03,176 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:17:03,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:17:03,179 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:17:03,180 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:17:03,181 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:17:03,185 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:17:03,186 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:17:03,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:17:03,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:17:03,193 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:17:03,195 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:17:03,196 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:17:03,197 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:17:03,199 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:17:03,208 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 [2018-10-25 02:17:03,223 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:17:03,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:17:03,224 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:17:03,224 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:17:03,224 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:17:03,224 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:17:03,225 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:17:03,225 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:17:03,225 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:17:03,225 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:17:03,225 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:17:03,226 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:17:03,226 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:17:03,226 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:17:03,227 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:17:03,227 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:17:03,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:17:03,228 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:17:03,228 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:17:03,228 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:17:03,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:17:03,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:17:03,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:17:03,229 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:17:03,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:17:03,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:17:03,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:17:03,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:17:03,230 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:17:03,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:17:03,230 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:17:03,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:17:03,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:17:03,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:17:03,231 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:17:03,231 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:17:03,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:17:03,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:17:03,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:17:03,316 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:17:03,317 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:17:03,317 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-10-25 02:17:03,391 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/835dc1478/7a1c1bedcef44672a34fa3136cdb9b5c/FLAGfb9fd9386 [2018-10-25 02:17:04,317 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:17:04,319 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-10-25 02:17:04,369 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/835dc1478/7a1c1bedcef44672a34fa3136cdb9b5c/FLAGfb9fd9386 [2018-10-25 02:17:04,386 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/835dc1478/7a1c1bedcef44672a34fa3136cdb9b5c [2018-10-25 02:17:04,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:17:04,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:17:04,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:17:04,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:17:04,410 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:17:04,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:17:04" (1/1) ... [2018-10-25 02:17:04,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:04, skipping insertion in model container [2018-10-25 02:17:04,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:17:04" (1/1) ... [2018-10-25 02:17:04,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:17:04,712 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:17:06,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:17:06,781 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:17:08,260 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:17:08,320 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:17:08,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08 WrapperNode [2018-10-25 02:17:08,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:17:08,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:17:08,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:17:08,322 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:17:08,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:08,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:17:09,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:17:09,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:17:09,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:17:09,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (1/1) ... [2018-10-25 02:17:09,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:17:09,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:17:09,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:17:09,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:17:09,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (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 [2018-10-25 02:17:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:17:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:17:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:17:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:17:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:17:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:17:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:17:09,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:17:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:17:09,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:17:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:17:09,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:17:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:17:09,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:17:09,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:17:09,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:17:09,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:17:09,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:17:27,293 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:17:27,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:17:27 BoogieIcfgContainer [2018-10-25 02:17:27,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:17:27,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:17:27,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:17:27,298 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:17:27,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:17:04" (1/3) ... [2018-10-25 02:17:27,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b40bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:17:27, skipping insertion in model container [2018-10-25 02:17:27,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:17:08" (2/3) ... [2018-10-25 02:17:27,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b40bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:17:27, skipping insertion in model container [2018-10-25 02:17:27,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:17:27" (3/3) ... [2018-10-25 02:17:27,302 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label56_true-unreach-call.c [2018-10-25 02:17:27,312 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:17:27,323 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:17:27,340 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:17:27,401 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:17:27,402 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:17:27,402 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:17:27,402 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:17:27,402 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:17:27,402 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:17:27,402 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:17:27,403 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:17:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:17:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-25 02:17:27,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:27,468 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] [2018-10-25 02:17:27,471 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:27,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1524406668, now seen corresponding path program 1 times [2018-10-25 02:17:27,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:27,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:27,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:17:27,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:28,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:17:28,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:28,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:17:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:17:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:17:28,029 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-25 02:17:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:17:52,443 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-10-25 02:17:52,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:17:52,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-25 02:17:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:17:52,509 INFO L225 Difference]: With dead ends: 6513 [2018-10-25 02:17:52,510 INFO L226 Difference]: Without dead ends: 4729 [2018-10-25 02:17:52,528 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 [2018-10-25 02:17:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-25 02:17:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-10-25 02:17:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-10-25 02:17:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-10-25 02:17:52,810 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 58 [2018-10-25 02:17:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:17:52,811 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-10-25 02:17:52,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:17:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-10-25 02:17:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-25 02:17:52,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:52,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:17:52,822 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:52,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash 650916201, now seen corresponding path program 1 times [2018-10-25 02:17:52,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:52,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:52,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:53,216 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:17:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:17:53,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:53,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:17:53,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:53,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:17:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:17:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:17:53,627 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-10-25 02:18:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:22,134 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-10-25 02:18:22,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:18:22,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-25 02:18:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:22,206 INFO L225 Difference]: With dead ends: 17886 [2018-10-25 02:18:22,206 INFO L226 Difference]: Without dead ends: 13199 [2018-10-25 02:18:22,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:18:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-10-25 02:18:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-10-25 02:18:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-10-25 02:18:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-10-25 02:18:22,592 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 130 [2018-10-25 02:18:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:22,593 INFO L481 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-10-25 02:18:22,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:18:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-10-25 02:18:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-25 02:18:22,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:22,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:22,607 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:22,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1399116121, now seen corresponding path program 1 times [2018-10-25 02:18:22,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:22,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:22,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:22,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:22,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:23,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:23,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:18:23,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:23,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:18:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:18:23,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:18:23,182 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-10-25 02:18:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:45,779 INFO L93 Difference]: Finished difference Result 39920 states and 60257 transitions. [2018-10-25 02:18:45,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 02:18:45,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-25 02:18:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:45,894 INFO L225 Difference]: With dead ends: 39920 [2018-10-25 02:18:45,895 INFO L226 Difference]: Without dead ends: 26796 [2018-10-25 02:18:45,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:18:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2018-10-25 02:18:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 26557. [2018-10-25 02:18:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26557 states. [2018-10-25 02:18:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 38668 transitions. [2018-10-25 02:18:46,496 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 38668 transitions. Word has length 140 [2018-10-25 02:18:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:46,497 INFO L481 AbstractCegarLoop]: Abstraction has 26557 states and 38668 transitions. [2018-10-25 02:18:46,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:18:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 38668 transitions. [2018-10-25 02:18:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-25 02:18:46,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:46,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:46,502 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:46,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash 564505847, now seen corresponding path program 1 times [2018-10-25 02:18:46,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:46,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:46,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:46,800 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:18:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:46,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:46,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:18:46,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:46,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:18:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:18:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:18:46,866 INFO L87 Difference]: Start difference. First operand 26557 states and 38668 transitions. Second operand 6 states. [2018-10-25 02:19:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:19:10,851 INFO L93 Difference]: Finished difference Result 73395 states and 112235 transitions. [2018-10-25 02:19:10,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:19:10,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-25 02:19:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:19:11,021 INFO L225 Difference]: With dead ends: 73395 [2018-10-25 02:19:11,021 INFO L226 Difference]: Without dead ends: 46844 [2018-10-25 02:19:11,098 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 [2018-10-25 02:19:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46844 states. [2018-10-25 02:19:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46844 to 46686. [2018-10-25 02:19:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46686 states. [2018-10-25 02:19:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46686 states to 46686 states and 66468 transitions. [2018-10-25 02:19:12,319 INFO L78 Accepts]: Start accepts. Automaton has 46686 states and 66468 transitions. Word has length 173 [2018-10-25 02:19:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:19:12,320 INFO L481 AbstractCegarLoop]: Abstraction has 46686 states and 66468 transitions. [2018-10-25 02:19:12,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:19:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 46686 states and 66468 transitions. [2018-10-25 02:19:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-25 02:19:12,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:19:12,328 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, 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] [2018-10-25 02:19:12,328 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:19:12,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1395186466, now seen corresponding path program 1 times [2018-10-25 02:19:12,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:19:12,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:12,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:19:12,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:12,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:19:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:19:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 102 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:19:12,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:19:12,579 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:19:12,580 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-10-25 02:19:12,582 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5590], [5592], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:19:12,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:19:12,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:19:13,048 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:19:13,050 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:19:13,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:13,075 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:19:13,658 INFO L232 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 75.8% of their original sizes. [2018-10-25 02:19:13,658 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:19:13,914 INFO L413 sIntCurrentIteration]: We have 208 unified AI predicates [2018-10-25 02:19:13,915 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:19:13,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:19:13,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:19:13,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:19:13,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:19:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:19:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:19:13,917 INFO L87 Difference]: Start difference. First operand 46686 states and 66468 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown