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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:47:45,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:47:45,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:47:45,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:47:45,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:47:45,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:47:45,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:47:45,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:47:45,325 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:47:45,326 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:47:45,327 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:47:45,327 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:47:45,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:47:45,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:47:45,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:47:45,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:47:45,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:47:45,334 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:47:45,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:47:45,337 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:47:45,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:47:45,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:47:45,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:47:45,352 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:47:45,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:47:45,355 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:47:45,357 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:47:45,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:47:45,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:47:45,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:47:45,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:47:45,391 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:47:45,391 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:47:45,391 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:47:45,391 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:47:45,391 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:47:45,394 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:47:45,394 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:47:45,394 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:47:45,394 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:47:45,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:47:45,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:47:45,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:47:45,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:47:45,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:47:45,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:47:45,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:47:45,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:47:45,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:47:45,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:47:45,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:47:45,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:47:45,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:47:45,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:47:45,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:47:45,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:47:45,398 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:47:45,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:47:45,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:47:45,399 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:47:45,399 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:47:45,399 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:47:45,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:47:45,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:47:45,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:47:45,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:47:45,460 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:47:45,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-24 21:47:45,528 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d086a625d/4067c70ad67944e7ba724d4209b6a129/FLAG76cca0c83 [2018-10-24 21:47:46,240 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:47:46,241 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-24 21:47:46,264 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d086a625d/4067c70ad67944e7ba724d4209b6a129/FLAG76cca0c83 [2018-10-24 21:47:46,286 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d086a625d/4067c70ad67944e7ba724d4209b6a129 [2018-10-24 21:47:46,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:47:46,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:47:46,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:47:46,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:47:46,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:47:46,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:46" (1/1) ... [2018-10-24 21:47:46,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:46, skipping insertion in model container [2018-10-24 21:47:46,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:46" (1/1) ... [2018-10-24 21:47:46,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:47:46,408 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:47:47,205 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:47:47,212 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:47:47,502 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:47:47,523 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:47:47,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47 WrapperNode [2018-10-24 21:47:47,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:47:47,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:47:47,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:47:47,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:47:47,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:47,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:47,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:47:47,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:47:47,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:47:47,933 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:47:47,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:47,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:47,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:47,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:48,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:48,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:48,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (1/1) ... [2018-10-24 21:47:48,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:47:48,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:47:48,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:47:48,144 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:47:48,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (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 [2018-10-24 21:47:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:47:48,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:47:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:47:48,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:47:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:47:48,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:47:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:47:48,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:47:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:47:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:47:54,549 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:47:54,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:54 BoogieIcfgContainer [2018-10-24 21:47:54,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:47:54,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:47:54,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:47:54,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:47:54,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:47:46" (1/3) ... [2018-10-24 21:47:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:54, skipping insertion in model container [2018-10-24 21:47:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:47" (2/3) ... [2018-10-24 21:47:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:54, skipping insertion in model container [2018-10-24 21:47:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:54" (3/3) ... [2018-10-24 21:47:54,559 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19_true-unreach-call.c [2018-10-24 21:47:54,569 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:47:54,579 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:47:54,600 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:47:54,643 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:47:54,644 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:47:54,644 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:47:54,644 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:47:54,644 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:47:54,645 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:47:54,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:47:54,645 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:47:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:47:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 21:47:54,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:54,691 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:47:54,693 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:54,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1227807684, now seen corresponding path program 1 times [2018-10-24 21:47:54,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:54,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:54,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:54,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:54,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:47:55,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:47:55,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:47:55,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:55,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:47:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:47:55,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:47:55,310 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:48:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:02,354 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 21:48:02,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:48:02,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-24 21:48:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:02,387 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 21:48:02,388 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 21:48:02,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:48:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 21:48:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-24 21:48:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-24 21:48:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-24 21:48:02,558 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 52 [2018-10-24 21:48:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:02,559 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-24 21:48:02,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:48:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-24 21:48:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 21:48:02,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:02,567 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:02,567 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:02,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:02,568 INFO L82 PathProgramCache]: Analyzing trace with hash -773066201, now seen corresponding path program 1 times [2018-10-24 21:48:02,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:02,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:02,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:02,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:02,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:02,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:02,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:48:02,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:02,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:48:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:48:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:48:02,842 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-10-24 21:48:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:16,112 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-10-24 21:48:16,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:48:16,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 21:48:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:16,136 INFO L225 Difference]: With dead ends: 2506 [2018-10-24 21:48:16,136 INFO L226 Difference]: Without dead ends: 1753 [2018-10-24 21:48:16,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:48:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-10-24 21:48:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-10-24 21:48:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 21:48:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-10-24 21:48:16,233 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 122 [2018-10-24 21:48:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:16,234 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-10-24 21:48:16,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:48:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-10-24 21:48:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 21:48:16,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:16,242 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:16,242 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:16,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1495807734, now seen corresponding path program 1 times [2018-10-24 21:48:16,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:16,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:16,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:16,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:16,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:16,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:16,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:48:16,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:16,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:48:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:48:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:48:16,613 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-10-24 21:48:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:30,557 INFO L93 Difference]: Finished difference Result 5661 states and 10507 transitions. [2018-10-24 21:48:30,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:48:30,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-24 21:48:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:30,592 INFO L225 Difference]: With dead ends: 5661 [2018-10-24 21:48:30,592 INFO L226 Difference]: Without dead ends: 3934 [2018-10-24 21:48:30,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:48:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2018-10-24 21:48:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3824. [2018-10-24 21:48:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2018-10-24 21:48:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5802 transitions. [2018-10-24 21:48:30,760 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5802 transitions. Word has length 123 [2018-10-24 21:48:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:30,761 INFO L481 AbstractCegarLoop]: Abstraction has 3824 states and 5802 transitions. [2018-10-24 21:48:30,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:48:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5802 transitions. [2018-10-24 21:48:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 21:48:30,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:30,764 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:30,765 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:30,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:30,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1360707218, now seen corresponding path program 1 times [2018-10-24 21:48:30,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:30,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:30,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:30,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:30,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:31,013 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:48:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:31,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:31,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:48:31,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:31,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:48:31,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:48:31,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:48:31,066 INFO L87 Difference]: Start difference. First operand 3824 states and 5802 transitions. Second operand 6 states. [2018-10-24 21:48:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:36,584 INFO L93 Difference]: Finished difference Result 10749 states and 17614 transitions. [2018-10-24 21:48:36,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:48:36,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 21:48:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:36,634 INFO L225 Difference]: With dead ends: 10749 [2018-10-24 21:48:36,634 INFO L226 Difference]: Without dead ends: 7240 [2018-10-24 21:48:36,673 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 [2018-10-24 21:48:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2018-10-24 21:48:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7185. [2018-10-24 21:48:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7185 states. [2018-10-24 21:48:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7185 states to 7185 states and 10405 transitions. [2018-10-24 21:48:36,899 INFO L78 Accepts]: Start accepts. Automaton has 7185 states and 10405 transitions. Word has length 127 [2018-10-24 21:48:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:36,899 INFO L481 AbstractCegarLoop]: Abstraction has 7185 states and 10405 transitions. [2018-10-24 21:48:36,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:48:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7185 states and 10405 transitions. [2018-10-24 21:48:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 21:48:36,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:36,905 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:36,905 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:36,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash -507052443, now seen corresponding path program 1 times [2018-10-24 21:48:36,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:36,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:36,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:36,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:36,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:37,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:37,277 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:37,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2018-10-24 21:48:37,280 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:37,353 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:37,354 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:39,246 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:44,905 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:48:44,907 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:48:44,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:44,930 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:48:44,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:44,931 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:48:44,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:44,947 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:48:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:45,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:48:48,851 WARN L179 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 37 [2018-10-24 21:48:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:51,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:48:51,530 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-24 21:48:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:51,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:48:51,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-10-24 21:48:51,846 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:51,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:48:51,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:48:51,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-24 21:48:51,848 INFO L87 Difference]: Start difference. First operand 7185 states and 10405 transitions. Second operand 3 states. [2018-10-24 21:48:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:55,522 INFO L93 Difference]: Finished difference Result 17965 states and 27183 transitions. [2018-10-24 21:48:55,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:48:55,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2018-10-24 21:48:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:55,586 INFO L225 Difference]: With dead ends: 17965 [2018-10-24 21:48:55,586 INFO L226 Difference]: Without dead ends: 11095 [2018-10-24 21:48:55,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-24 21:48:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2018-10-24 21:48:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 11093. [2018-10-24 21:48:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11093 states. [2018-10-24 21:48:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11093 states to 11093 states and 15366 transitions. [2018-10-24 21:48:56,209 INFO L78 Accepts]: Start accepts. Automaton has 11093 states and 15366 transitions. Word has length 148 [2018-10-24 21:48:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:56,210 INFO L481 AbstractCegarLoop]: Abstraction has 11093 states and 15366 transitions. [2018-10-24 21:48:56,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:48:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states and 15366 transitions. [2018-10-24 21:48:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 21:48:56,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:56,221 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:56,222 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:56,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:56,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1797896167, now seen corresponding path program 1 times [2018-10-24 21:48:56,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:56,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:56,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:56,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:56,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:56,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:56,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:56,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-24 21:48:56,660 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1056], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:56,672 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:56,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:59,514 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:59,671 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:48:59,671 INFO L272 AbstractInterpreter]: Visited 172 different actions 172 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:48:59,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:59,709 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:49:01,322 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 78.05% of their original sizes. [2018-10-24 21:49:01,323 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:49:01,922 INFO L413 sIntCurrentIteration]: We have 219 unified AI predicates [2018-10-24 21:49:01,922 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:49:01,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:49:01,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:49:01,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:49:01,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:49:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:49:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:49:01,925 INFO L87 Difference]: Start difference. First operand 11093 states and 15366 transitions. Second operand 8 states. [2018-10-24 21:49:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:49:50,312 INFO L93 Difference]: Finished difference Result 21873 states and 30390 transitions. [2018-10-24 21:49:50,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:49:50,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2018-10-24 21:49:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:49:50,357 INFO L225 Difference]: With dead ends: 21873 [2018-10-24 21:49:50,357 INFO L226 Difference]: Without dead ends: 11094 [2018-10-24 21:49:50,388 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:49:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11094 states. [2018-10-24 21:49:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11094 to 11085. [2018-10-24 21:49:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11085 states. [2018-10-24 21:49:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 15316 transitions. [2018-10-24 21:49:50,668 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 15316 transitions. Word has length 220 [2018-10-24 21:49:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:49:50,668 INFO L481 AbstractCegarLoop]: Abstraction has 11085 states and 15316 transitions. [2018-10-24 21:49:50,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:49:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 15316 transitions. [2018-10-24 21:49:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-24 21:49:50,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:49:50,680 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:49:50,681 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:49:50,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1909686646, now seen corresponding path program 1 times [2018-10-24 21:49:50,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:49:50,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:49:50,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:49:50,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:49:50,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:49:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:49:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 89 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:49:51,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:49:51,366 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:49:51,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-10-24 21:49:51,367 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [872], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:49:51,380 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:49:51,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:49:52,627 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:49:59,745 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:49:59,745 INFO L272 AbstractInterpreter]: Visited 138 different actions 400 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:49:59,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:59,752 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:49:59,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:49:59,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:49:59,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:49:59,761 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:49:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:49:59,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:50:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 21:50:00,002 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:50:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 21:50:00,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:50:00,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-10-24 21:50:00,776 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:50:00,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:50:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:50:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:50:00,778 INFO L87 Difference]: Start difference. First operand 11085 states and 15316 transitions. Second operand 5 states. [2018-10-24 21:50:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:50:06,796 INFO L93 Difference]: Finished difference Result 24041 states and 34406 transitions. [2018-10-24 21:50:06,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:50:06,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-10-24 21:50:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:50:06,837 INFO L225 Difference]: With dead ends: 24041 [2018-10-24 21:50:06,838 INFO L226 Difference]: Without dead ends: 9243 [2018-10-24 21:50:06,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 552 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:50:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2018-10-24 21:50:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 7657. [2018-10-24 21:50:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7657 states. [2018-10-24 21:50:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7657 states to 7657 states and 9347 transitions. [2018-10-24 21:50:07,084 INFO L78 Accepts]: Start accepts. Automaton has 7657 states and 9347 transitions. Word has length 277 [2018-10-24 21:50:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:50:07,085 INFO L481 AbstractCegarLoop]: Abstraction has 7657 states and 9347 transitions. [2018-10-24 21:50:07,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:50:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7657 states and 9347 transitions. [2018-10-24 21:50:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-24 21:50:07,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:50:07,090 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:50:07,091 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:50:07,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:50:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2141796424, now seen corresponding path program 1 times [2018-10-24 21:50:07,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:50:07,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:07,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:50:07,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:07,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:50:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:50:07,782 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-10-24 21:50:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:50:08,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:50:08,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:50:08,171 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-24 21:50:08,171 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:50:08,184 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:50:08,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:50:11,693 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:50:25,700 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:50:25,701 INFO L272 AbstractInterpreter]: Visited 246 different actions 724 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:50:25,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:50:25,710 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:50:25,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:50:25,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:50:25,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:50:25,721 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:50:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:50:25,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:50:29,960 WARN L179 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 38 [2018-10-24 21:50:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:50:30,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:50:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:50:33,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:50:33,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-24 21:50:33,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:50:33,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:50:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:50:33,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2018-10-24 21:50:33,576 INFO L87 Difference]: Start difference. First operand 7657 states and 9347 transitions. Second operand 6 states. [2018-10-24 21:50:35,594 WARN L832 $PredicateComparison]: unable to prove that (and (or (forall ((v_~a0~0_BEFORE_CALL_10 Int)) (or (exists ((v_prenex_12 Int)) (let ((.cse0 (* 9 v_prenex_12))) (and (<= v_prenex_12 v_~a0~0_BEFORE_CALL_10) (= 0 (mod .cse0 10)) (<= 588645 (div .cse0 10))))) (< v_~a0~0_BEFORE_CALL_10 |c_old(~a0~0)|))) (< (div (* 9 c_~a0~0) 10) 588645)) (forall ((v_prenex_12 Int)) (let ((.cse1 (* 9 v_prenex_12))) (or (< c_~a0~0 v_prenex_12) (not (= 0 (mod .cse1 10))) (< (div .cse1 10) 588645))))) is different from false Received shutdown request... [2018-10-24 21:51:40,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 21:51:40,296 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:51:40,301 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:51:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:51:40 BoogieIcfgContainer [2018-10-24 21:51:40,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:51:40,302 INFO L168 Benchmark]: Toolchain (without parser) took 234004.04 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -472.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,303 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:51:40,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1223.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 408.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,305 INFO L168 Benchmark]: Boogie Preprocessor took 210.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,306 INFO L168 Benchmark]: RCFGBuilder took 6406.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 293.3 MB). Peak memory consumption was 293.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,309 INFO L168 Benchmark]: TraceAbstraction took 225750.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -31.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:51:40,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1223.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 408.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6406.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 293.3 MB). Peak memory consumption was 293.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225750.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -31.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (7657states) and FLOYD_HOARE automaton (currently 5 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (222 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 165.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1965 SDtfs, 7865 SDslu, 1394 SDs, 0 SdLazy, 14616 SolverSat, 3378 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 138.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1712 GetRequests, 1644 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11093occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.6s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9961700086030046 AbsIntWeakeningRatio, 0.091324200913242 AbsIntAvgWeakeningVarsNumRemoved, 904.0593607305937 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 2137 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 2074 NumberOfCodeBlocks, 2074 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2775 ConstructedInterpolants, 291 QuantifiedInterpolants, 4943768 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1178 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 700/1008 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown