java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:00:54,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:00:54,273 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:00:54,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:00:54,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:00:54,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:00:54,289 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:00:54,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:00:54,293 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:00:54,294 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:00:54,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:00:54,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:00:54,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:00:54,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:00:54,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:00:54,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:00:54,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:00:54,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:00:54,305 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:00:54,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:00:54,308 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:00:54,309 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:00:54,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:00:54,312 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:00:54,312 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:00:54,313 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:00:54,314 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:00:54,315 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:00:54,316 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:00:54,317 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:00:54,318 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:00:54,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:00:54,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:00:54,319 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:00:54,320 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:00:54,321 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:00:54,321 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:00:54,337 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:00:54,338 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:00:54,339 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:00:54,339 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:00:54,339 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:00:54,339 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:00:54,340 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:00:54,341 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:00:54,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:00:54,342 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:00:54,342 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:00:54,342 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:00:54,342 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:00:54,343 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:00:54,343 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:00:54,343 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:00:54,343 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:00:54,343 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:00:54,344 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:00:54,344 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:00:54,344 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:00:54,344 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:00:54,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:00:54,345 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:00:54,345 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:00:54,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:00:54,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:00:54,346 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:00:54,346 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:00:54,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:00:54,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:00:54,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:00:54,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:00:54,413 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:00:54,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 12:00:54,480 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eabe8bdd/c33330404fdd48108968522cb7885794/FLAGe25466aec [2018-11-07 12:00:55,091 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:00:55,092 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 12:00:55,117 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eabe8bdd/c33330404fdd48108968522cb7885794/FLAGe25466aec [2018-11-07 12:00:55,133 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eabe8bdd/c33330404fdd48108968522cb7885794 [2018-11-07 12:00:55,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:00:55,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:00:55,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:00:55,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:00:55,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:00:55,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:55,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55, skipping insertion in model container [2018-11-07 12:00:55,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:55,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:00:55,250 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:00:55,794 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:00:55,802 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:00:55,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:00:55,990 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:00:55,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55 WrapperNode [2018-11-07 12:00:55,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:00:55,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:00:55,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:00:55,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:00:56,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:00:56,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:00:56,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:00:56,132 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:00:56,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... [2018-11-07 12:00:56,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:00:56,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:00:56,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:00:56,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:00:56,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:00:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:00:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:00:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:00:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:00:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:00:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:00:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:00:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:00:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:00:59,877 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:00:59,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:00:59 BoogieIcfgContainer [2018-11-07 12:00:59,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:00:59,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:00:59,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:00:59,883 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:00:59,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:00:55" (1/3) ... [2018-11-07 12:00:59,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:00:59, skipping insertion in model container [2018-11-07 12:00:59,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:00:55" (2/3) ... [2018-11-07 12:00:59,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:00:59, skipping insertion in model container [2018-11-07 12:00:59,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:00:59" (3/3) ... [2018-11-07 12:00:59,888 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 12:00:59,898 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:00:59,908 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:00:59,927 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:00:59,967 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:00:59,967 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:00:59,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:00:59,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:00:59,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:00:59,968 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:00:59,969 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:00:59,969 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:00:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:01:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 12:01:00,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:00,006 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] [2018-11-07 12:01:00,009 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:00,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash 177535516, now seen corresponding path program 1 times [2018-11-07 12:01:00,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:00,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:00,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:00,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:00,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:00,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:00,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:01:00,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:00,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:01:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:01:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:01:00,532 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 12:01:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:03,236 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 12:01:03,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:01:03,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-07 12:01:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:03,260 INFO L225 Difference]: With dead ends: 894 [2018-11-07 12:01:03,260 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 12:01:03,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:01:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 12:01:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 12:01:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 12:01:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 12:01:03,377 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 28 [2018-11-07 12:01:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:03,378 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 12:01:03,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:01:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 12:01:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 12:01:03,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:03,386 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:01:03,387 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:03,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash 578252947, now seen corresponding path program 1 times [2018-11-07 12:01:03,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:03,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:03,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:03,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:03,389 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:03,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:03,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:01:03,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:03,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:01:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:01:03,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:01:03,693 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 12:01:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:06,791 INFO L93 Difference]: Finished difference Result 2358 states and 3741 transitions. [2018-11-07 12:01:06,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:01:06,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-07 12:01:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:06,814 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 12:01:06,814 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 12:01:06,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:01:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 12:01:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 12:01:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 12:01:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2519 transitions. [2018-11-07 12:01:06,924 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2519 transitions. Word has length 141 [2018-11-07 12:01:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:06,925 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2519 transitions. [2018-11-07 12:01:06,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:01:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2519 transitions. [2018-11-07 12:01:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 12:01:06,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:06,944 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 12:01:06,944 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:06,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:06,945 INFO L82 PathProgramCache]: Analyzing trace with hash -138677585, now seen corresponding path program 1 times [2018-11-07 12:01:06,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:06,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:06,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 12:01:07,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:07,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:01:07,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:07,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:01:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:01:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:01:07,326 INFO L87 Difference]: Start difference. First operand 1731 states and 2519 transitions. Second operand 4 states. [2018-11-07 12:01:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:09,936 INFO L93 Difference]: Finished difference Result 5832 states and 9044 transitions. [2018-11-07 12:01:09,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:01:09,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-07 12:01:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:09,980 INFO L225 Difference]: With dead ends: 5832 [2018-11-07 12:01:09,981 INFO L226 Difference]: Without dead ends: 4107 [2018-11-07 12:01:10,000 INFO L604 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 [2018-11-07 12:01:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2018-11-07 12:01:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4107. [2018-11-07 12:01:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2018-11-07 12:01:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5921 transitions. [2018-11-07 12:01:10,156 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5921 transitions. Word has length 215 [2018-11-07 12:01:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:10,158 INFO L480 AbstractCegarLoop]: Abstraction has 4107 states and 5921 transitions. [2018-11-07 12:01:10,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:01:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5921 transitions. [2018-11-07 12:01:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 12:01:10,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:10,169 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 12:01:10,169 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:10,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash 801110427, now seen corresponding path program 1 times [2018-11-07 12:01:10,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:10,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:10,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:10,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:10,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:01:10,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:01:10,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 12:01:10,759 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:01:10,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:01:10,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:01:11,901 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:01:21,840 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:01:21,842 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:01:21,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:21,854 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:01:32,025 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 77.46% of their original sizes. [2018-11-07 12:01:32,026 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:01:32,369 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-07 12:01:32,373 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:01:32,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:01:32,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-07 12:01:32,375 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:32,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:01:32,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:01:32,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:01:32,377 INFO L87 Difference]: Start difference. First operand 4107 states and 5921 transitions. Second operand 7 states. [2018-11-07 12:02:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:02:36,957 INFO L93 Difference]: Finished difference Result 8393 states and 12078 transitions. [2018-11-07 12:02:36,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:02:36,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-11-07 12:02:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:02:36,988 INFO L225 Difference]: With dead ends: 8393 [2018-11-07 12:02:36,988 INFO L226 Difference]: Without dead ends: 4292 [2018-11-07 12:02:37,009 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:02:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2018-11-07 12:02:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4290. [2018-11-07 12:02:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4290 states. [2018-11-07 12:02:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6112 transitions. [2018-11-07 12:02:37,140 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6112 transitions. Word has length 241 [2018-11-07 12:02:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:02:37,141 INFO L480 AbstractCegarLoop]: Abstraction has 4290 states and 6112 transitions. [2018-11-07 12:02:37,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:02:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6112 transitions. [2018-11-07 12:02:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 12:02:37,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:02:37,153 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:02:37,154 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:02:37,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2059096588, now seen corresponding path program 1 times [2018-11-07 12:02:37,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:02:37,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:37,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:02:37,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:37,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:02:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:02:37,728 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:02:37,943 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 12:02:38,176 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:02:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 151 proven. 177 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:02:38,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:02:38,671 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:02:38,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 12:02:38,672 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:02:38,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:02:38,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:02:38,927 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:02:55,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:02:55,830 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 12:02:55,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:55,840 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:03:04,831 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 78.03% of their original sizes. [2018-11-07 12:03:04,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:03:05,757 INFO L415 sIntCurrentIteration]: We unified 325 AI predicates to 325 [2018-11-07 12:03:05,758 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:03:05,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:03:05,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 12:03:05,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:03:05,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 12:03:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 12:03:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 12:03:05,761 INFO L87 Difference]: Start difference. First operand 4290 states and 6112 transitions. Second operand 25 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown