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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:44:42,385 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:44:42,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:44:42,419 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:44:42,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:44:42,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:44:42,425 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:44:42,429 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:44:42,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:44:42,434 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:44:42,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:44:42,437 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:44:42,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:44:42,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:44:42,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:44:42,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:44:42,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:44:42,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:44:42,460 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:44:42,461 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:44:42,465 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:44:42,467 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:44:42,474 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:44:42,475 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:44:42,475 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:44:42,476 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:44:42,477 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:44:42,478 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:44:42,481 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:44:42,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:44:42,482 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:44:42,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:44:42,485 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:44:42,485 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:44:42,486 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:44:42,487 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:44:42,487 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-LIM.epf [2018-11-12 16:44:42,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:44:42,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:44:42,519 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:44:42,519 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:44:42,520 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:44:42,521 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:44:42,521 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:44:42,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:44:42,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:44:42,521 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:44:42,522 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:44:42,522 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:44:42,522 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:44:42,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:44:42,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:44:42,524 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:44:42,524 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:44:42,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:44:42,526 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:44:42,526 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:44:42,526 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:44:42,526 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:44:42,526 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:44:42,527 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:44:42,527 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:44:42,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:44:42,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:44:42,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:44:42,528 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:44:42,528 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:44:42,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:44:42,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:44:42,529 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:44:42,529 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:44:42,529 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:44:42,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:44:42,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:44:42,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:44:42,607 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:44:42,607 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:44:42,608 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-12 16:44:42,676 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35887c2bf/eb705a663e994c7ba816c85219138437/FLAGed481a42b [2018-11-12 16:44:43,394 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:44:43,395 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-12 16:44:43,413 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35887c2bf/eb705a663e994c7ba816c85219138437/FLAGed481a42b [2018-11-12 16:44:43,431 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35887c2bf/eb705a663e994c7ba816c85219138437 [2018-11-12 16:44:43,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:44:43,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:44:43,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:43,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:44:43,452 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:44:43,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:43" (1/1) ... [2018-11-12 16:44:43,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3631e39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:43, skipping insertion in model container [2018-11-12 16:44:43,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:43" (1/1) ... [2018-11-12 16:44:43,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:44:43,560 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:44:44,387 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:44,392 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:44:44,596 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:44,619 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:44:44,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44 WrapperNode [2018-11-12 16:44:44,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:44,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:44,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:44:44,621 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:44:44,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:44,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:44:44,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:44:44,836 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:44:44,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:44,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:45,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:45,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (1/1) ... [2018-11-12 16:44:45,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:44:45,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:44:45,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:44:45,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:44:45,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (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 [2018-11-12 16:44:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:44:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:44:45,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:44:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:44:45,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:44:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:44:45,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:44:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:44:45,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:44:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:44:45,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:44:51,736 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:44:51,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:51 BoogieIcfgContainer [2018-11-12 16:44:51,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:44:51,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:44:51,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:44:51,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:44:51,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:44:43" (1/3) ... [2018-11-12 16:44:51,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ee644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:51, skipping insertion in model container [2018-11-12 16:44:51,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:44" (2/3) ... [2018-11-12 16:44:51,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ee644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:51, skipping insertion in model container [2018-11-12 16:44:51,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:51" (3/3) ... [2018-11-12 16:44:51,750 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label43_false-unreach-call.c [2018-11-12 16:44:51,762 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:44:51,775 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:44:51,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:44:51,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:44:51,850 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:44:51,850 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:44:51,851 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:44:51,851 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:44:51,851 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:44:51,851 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:44:51,851 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:44:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:44:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 16:44:51,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:51,912 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:44:51,917 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:51,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash 447035884, now seen corresponding path program 1 times [2018-11-12 16:44:51,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:51,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:51,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:51,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:51,980 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:52,308 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:52,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:52,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:44:52,340 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:52,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:44:52,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:44:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:44:52,361 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:44:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:55,742 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:44:55,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:44:55,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-12 16:44:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:55,769 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:44:55,770 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:44:55,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:44:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:44:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:44:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:44:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-12 16:44:55,900 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 16 [2018-11-12 16:44:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:55,900 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-12 16:44:55,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:44:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-12 16:44:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-12 16:44:55,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:55,907 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:44:55,908 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:55,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 803475559, now seen corresponding path program 1 times [2018-11-12 16:44:55,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:55,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:55,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:55,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:55,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:56,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:56,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:56,337 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:56,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:56,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:56,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:56,341 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-12 16:45:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:03,059 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-12 16:45:03,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:45:03,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-12 16:45:03,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:03,086 INFO L225 Difference]: With dead ends: 2184 [2018-11-12 16:45:03,086 INFO L226 Difference]: Without dead ends: 1446 [2018-11-12 16:45:03,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:45:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-12 16:45:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-12 16:45:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-12 16:45:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-12 16:45:03,175 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 109 [2018-11-12 16:45:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:03,176 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-12 16:45:03,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:45:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-12 16:45:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-12 16:45:03,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:03,191 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:45:03,191 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:03,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash -983617648, now seen corresponding path program 1 times [2018-11-12 16:45:03,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:03,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:03,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:03,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:03,193 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:45:03,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:03,523 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:03,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-12 16:45:03,526 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:03,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:03,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:04,461 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:04,463 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1922 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1922 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:45:04,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:04,516 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:05,524 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-12 16:45:05,524 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:06,495 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-12 16:45:06,495 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:06,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:06,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 16:45:06,497 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:06,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:45:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:45:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:45:06,498 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-12 16:45:11,350 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:35,782 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-12 16:45:35,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:45:35,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 220 [2018-11-12 16:45:35,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:35,792 INFO L225 Difference]: With dead ends: 3187 [2018-11-12 16:45:35,793 INFO L226 Difference]: Without dead ends: 1768 [2018-11-12 16:45:35,798 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 191 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:45:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-12 16:45:35,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-12 16:45:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-12 16:45:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-12 16:45:35,844 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 220 [2018-11-12 16:45:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:35,844 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-12 16:45:35,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:45:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-12 16:45:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-12 16:45:35,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:35,851 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:45:35,852 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:35,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:35,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1465497490, now seen corresponding path program 1 times [2018-11-12 16:45:35,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:35,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:35,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:35,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:35,854 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:36,204 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:45:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 33 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:45:36,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:36,645 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:36,645 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 313 with the following transitions: [2018-11-12 16:45:36,646 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:36,651 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:36,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:36,782 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:38,112 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:38,112 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Performed 5775 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5775 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:45:38,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:38,150 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:39,010 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 16:45:39,010 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:41,612 INFO L415 sIntCurrentIteration]: We unified 311 AI predicates to 311 [2018-11-12 16:45:41,612 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:41,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:41,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:45:41,613 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:41,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:45:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:45:41,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:45:41,615 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 23 states. [2018-11-12 16:46:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:23,668 INFO L93 Difference]: Finished difference Result 5244 states and 8307 transitions. [2018-11-12 16:46:23,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:46:23,669 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 312 [2018-11-12 16:46:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:23,687 INFO L225 Difference]: With dead ends: 5244 [2018-11-12 16:46:23,688 INFO L226 Difference]: Without dead ends: 3825 [2018-11-12 16:46:23,695 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 331 GetRequests, 275 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:46:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2018-11-12 16:46:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3357. [2018-11-12 16:46:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2018-11-12 16:46:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4261 transitions. [2018-11-12 16:46:23,789 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4261 transitions. Word has length 312 [2018-11-12 16:46:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:23,790 INFO L480 AbstractCegarLoop]: Abstraction has 3357 states and 4261 transitions. [2018-11-12 16:46:23,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:46:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4261 transitions. [2018-11-12 16:46:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-12 16:46:23,799 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:23,799 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:46:23,800 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:23,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1959506058, now seen corresponding path program 1 times [2018-11-12 16:46:23,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:23,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:23,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:23,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:23,801 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:24,130 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:46:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:46:24,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:24,698 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:24,698 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-11-12 16:46:24,699 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:46:24,703 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:24,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:24,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:25,192 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:25,192 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 5968 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5968 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:46:25,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:25,208 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:25,712 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 16:46:25,713 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:26,359 INFO L415 sIntCurrentIteration]: We unified 347 AI predicates to 347 [2018-11-12 16:46:26,359 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:26,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:26,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:46:26,360 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:26,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:46:26,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:46:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:46:26,361 INFO L87 Difference]: Start difference. First operand 3357 states and 4261 transitions. Second operand 23 states. [2018-11-12 16:47:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:03,149 INFO L93 Difference]: Finished difference Result 7077 states and 9899 transitions. [2018-11-12 16:47:03,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:47:03,149 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 348 [2018-11-12 16:47:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:03,170 INFO L225 Difference]: With dead ends: 7077 [2018-11-12 16:47:03,171 INFO L226 Difference]: Without dead ends: 4931 [2018-11-12 16:47:03,179 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 363 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 16:47:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2018-11-12 16:47:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4915. [2018-11-12 16:47:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4915 states. [2018-11-12 16:47:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 5882 transitions. [2018-11-12 16:47:03,305 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 5882 transitions. Word has length 348 [2018-11-12 16:47:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:03,306 INFO L480 AbstractCegarLoop]: Abstraction has 4915 states and 5882 transitions. [2018-11-12 16:47:03,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:47:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 5882 transitions. [2018-11-12 16:47:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-11-12 16:47:03,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:03,321 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:47:03,322 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:03,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:03,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1076667734, now seen corresponding path program 1 times [2018-11-12 16:47:03,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:03,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:03,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:03,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:03,323 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:03,756 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:47:04,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:04,286 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:04,286 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 461 with the following transitions: [2018-11-12 16:47:04,287 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:47:04,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:04,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:04,995 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:04,996 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 8667 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8667 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:47:05,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:05,039 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:05,555 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-12 16:47:05,555 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:07,029 INFO L415 sIntCurrentIteration]: We unified 459 AI predicates to 459 [2018-11-12 16:47:07,029 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:07,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:07,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 16:47:07,030 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:07,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:47:07,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:47:07,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:47:07,032 INFO L87 Difference]: Start difference. First operand 4915 states and 5882 transitions. Second operand 18 states. [2018-11-12 16:47:09,622 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:47:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:20,646 INFO L93 Difference]: Finished difference Result 8386 states and 10679 transitions. [2018-11-12 16:47:20,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:47:20,647 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 460 [2018-11-12 16:47:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:20,666 INFO L225 Difference]: With dead ends: 8386 [2018-11-12 16:47:20,667 INFO L226 Difference]: Without dead ends: 5551 [2018-11-12 16:47:20,676 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 475 GetRequests, 399 SyntacticMatches, 44 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 16:47:20,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2018-11-12 16:47:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 5546. [2018-11-12 16:47:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5546 states. [2018-11-12 16:47:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5546 states to 5546 states and 6547 transitions. [2018-11-12 16:47:20,807 INFO L78 Accepts]: Start accepts. Automaton has 5546 states and 6547 transitions. Word has length 460 [2018-11-12 16:47:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:20,808 INFO L480 AbstractCegarLoop]: Abstraction has 5546 states and 6547 transitions. [2018-11-12 16:47:20,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:47:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5546 states and 6547 transitions. [2018-11-12 16:47:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-11-12 16:47:20,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:20,826 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:47:20,826 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:20,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:20,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1424439578, now seen corresponding path program 1 times [2018-11-12 16:47:20,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:20,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:20,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:20,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:20,828 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:21,226 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:47:21,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:21,524 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:21,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 469 with the following transitions: [2018-11-12 16:47:21,525 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:47:21,530 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:21,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:24,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:24,203 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Performed 37594 root evaluator evaluations with a maximum evaluation depth of 6. Performed 37594 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:47:24,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:24,212 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:24,837 INFO L227 lantSequenceWeakener]: Weakened 115 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 16:47:24,837 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:25,191 INFO L415 sIntCurrentIteration]: We unified 467 AI predicates to 467 [2018-11-12 16:47:25,191 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:25,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:25,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:47:25,191 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:25,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:47:25,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:47:25,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:47:25,193 INFO L87 Difference]: Start difference. First operand 5546 states and 6547 transitions. Second operand 23 states. [2018-11-12 16:47:27,931 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:47:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:44,300 INFO L93 Difference]: Finished difference Result 9022 states and 11359 transitions. [2018-11-12 16:47:44,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 16:47:44,300 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 468 [2018-11-12 16:47:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:44,319 INFO L225 Difference]: With dead ends: 9022 [2018-11-12 16:47:44,320 INFO L226 Difference]: Without dead ends: 6187 [2018-11-12 16:47:44,327 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 480 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 16:47:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6187 states. [2018-11-12 16:47:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6187 to 6179. [2018-11-12 16:47:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6179 states. [2018-11-12 16:47:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6179 states to 6179 states and 7222 transitions. [2018-11-12 16:47:44,460 INFO L78 Accepts]: Start accepts. Automaton has 6179 states and 7222 transitions. Word has length 468 [2018-11-12 16:47:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:44,461 INFO L480 AbstractCegarLoop]: Abstraction has 6179 states and 7222 transitions. [2018-11-12 16:47:44,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:47:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6179 states and 7222 transitions. [2018-11-12 16:47:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-11-12 16:47:44,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:44,483 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-12 16:47:44,483 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:44,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash -284301652, now seen corresponding path program 1 times [2018-11-12 16:47:44,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:44,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:44,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:44,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:44,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:44,899 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:47:45,392 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:47:45,742 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:47:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 136 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-12 16:47:47,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:47,158 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:47,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 553 with the following transitions: [2018-11-12 16:47:47,158 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:47:47,163 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:47,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:47,227 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:47:47,985 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:47:47,986 INFO L272 AbstractInterpreter]: Visited 251 different actions 998 times. Merged at 7 different actions 30 times. Never widened. Performed 15656 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15656 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:47:47,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:47,990 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:47:47,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:47,991 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:47:48,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:48,004 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:47:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:48,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:47:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-11-12 16:47:48,907 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:47:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 136 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-12 16:47:49,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:47:49,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-12 16:47:49,745 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:47:49,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:47:49,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:47:49,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:47:49,747 INFO L87 Difference]: Start difference. First operand 6179 states and 7222 transitions. Second operand 16 states. [2018-11-12 16:48:00,028 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2018-11-12 16:48:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:48:05,540 INFO L93 Difference]: Finished difference Result 12694 states and 16566 transitions. [2018-11-12 16:48:05,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-12 16:48:05,541 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 552 [2018-11-12 16:48:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:48:05,559 INFO L225 Difference]: With dead ends: 12694 [2018-11-12 16:48:05,560 INFO L226 Difference]: Without dead ends: 4286 [2018-11-12 16:48:05,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=955, Invalid=3601, Unknown=0, NotChecked=0, Total=4556 [2018-11-12 16:48:05,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2018-11-12 16:48:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4075. [2018-11-12 16:48:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4075 states. [2018-11-12 16:48:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 4587 transitions. [2018-11-12 16:48:05,681 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 4587 transitions. Word has length 552 [2018-11-12 16:48:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:48:05,682 INFO L480 AbstractCegarLoop]: Abstraction has 4075 states and 4587 transitions. [2018-11-12 16:48:05,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:48:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 4587 transitions. [2018-11-12 16:48:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2018-11-12 16:48:05,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:48:05,706 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:48:05,706 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:48:05,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:48:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash -982695293, now seen corresponding path program 1 times [2018-11-12 16:48:05,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:48:05,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:05,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:48:05,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:05,708 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:48:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:48:06,175 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:48:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 67 proven. 653 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-11-12 16:48:06,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:48:06,965 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:48:06,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 686 with the following transitions: [2018-11-12 16:48:06,966 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:48:06,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:48:06,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:48:07,030 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:48:09,140 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:48:09,141 INFO L272 AbstractInterpreter]: Visited 259 different actions 2556 times. Merged at 7 different actions 65 times. Widened at 1 different actions 5 times. Performed 37651 root evaluator evaluations with a maximum evaluation depth of 6. Performed 37651 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:48:09,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:48:09,169 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:48:10,350 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-12 16:48:10,350 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:48:10,697 INFO L415 sIntCurrentIteration]: We unified 684 AI predicates to 684 [2018-11-12 16:48:10,697 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:48:10,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:48:10,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 16:48:10,698 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:48:10,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:48:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:48:10,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:48:10,700 INFO L87 Difference]: Start difference. First operand 4075 states and 4587 transitions. Second operand 20 states. Received shutdown request... [2018-11-12 16:48:23,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 16:48:23,063 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:48:23,068 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:48:23,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:48:23 BoogieIcfgContainer [2018-11-12 16:48:23,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:48:23,069 INFO L168 Benchmark]: Toolchain (without parser) took 219624.92 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -725.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:48:23,070 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:48:23,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1173.20 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:23,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:23,072 INFO L168 Benchmark]: Boogie Preprocessor took 195.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:48:23,073 INFO L168 Benchmark]: RCFGBuilder took 6708.59 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: 258.4 MB). Peak memory consumption was 258.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:23,074 INFO L168 Benchmark]: TraceAbstraction took 211326.89 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:48:23,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1173.20 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6708.59 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: 258.4 MB). Peak memory consumption was 258.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211326.89 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (4075states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (1087 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.2s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 179.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2423 SDtfs, 29337 SDslu, 1644 SDs, 0 SdLazy, 35095 SolverSat, 7187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.5s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 3787 GetRequests, 3448 SyntacticMatches, 82 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3106 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6179occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.4s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.9975338804887243 AbsIntWeakeningRatio, 0.07961399276236429 AbsIntAvgWeakeningVarsNumRemoved, 10.980699638118216 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 734 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 3722 NumberOfCodeBlocks, 3722 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4263 ConstructedInterpolants, 0 QuantifiedInterpolants, 8828891 SizeOfPredicates, 1 NumberOfNonLiveVariables, 818 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 2290/4281 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown