java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:40:52,670 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:40:52,675 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:40:52,689 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:40:52,690 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:40:52,691 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:40:52,692 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:40:52,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:40:52,695 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:40:52,696 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:40:52,697 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:40:52,697 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:40:52,698 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:40:52,700 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:40:52,701 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:40:52,702 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:40:52,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:40:52,707 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:40:52,712 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:40:52,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:40:52,717 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:40:52,721 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:40:52,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:40:52,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:40:52,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:40:52,729 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:40:52,730 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:40:52,733 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:40:52,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:40:52,735 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:40:52,735 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:40:52,736 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:40:52,737 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:40:52,737 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:40:52,738 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:40:52,738 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:40:52,739 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:40:52,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:40:52,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:40:52,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:40:52,774 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:40:52,774 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:40:52,775 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:40:52,775 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:40:52,775 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:40:52,775 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:40:52,775 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:40:52,776 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:40:52,778 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:40:52,779 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:40:52,779 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:40:52,779 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:40:52,779 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:40:52,779 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:40:52,780 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:40:52,780 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:40:52,780 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:40:52,780 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:40:52,780 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:40:52,780 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:40:52,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:40:52,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:40:52,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:40:52,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:40:52,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:40:52,783 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:40:52,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:40:52,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:40:52,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:40:52,784 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:40:52,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:40:52,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:40:52,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:40:52,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:40:52,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:40:52,872 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:40:52,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-10-27 13:40:52,936 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f4254486/1ae2a4ccf970447f9b0879b9217a9ae3/FLAGcccb1d188 [2018-10-27 13:40:53,465 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:40:53,467 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-10-27 13:40:53,484 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f4254486/1ae2a4ccf970447f9b0879b9217a9ae3/FLAGcccb1d188 [2018-10-27 13:40:53,502 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0f4254486/1ae2a4ccf970447f9b0879b9217a9ae3 [2018-10-27 13:40:53,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:40:53,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:40:53,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:40:53,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:40:53,521 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:40:53,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:53" (1/1) ... [2018-10-27 13:40:53,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a192096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:53, skipping insertion in model container [2018-10-27 13:40:53,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:53" (1/1) ... [2018-10-27 13:40:53,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:40:53,608 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:40:54,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:40:54,079 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:40:54,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:40:54,194 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:40:54,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54 WrapperNode [2018-10-27 13:40:54,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:40:54,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:40:54,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:40:54,196 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:40:54,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:40:54,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:40:54,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:40:54,379 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:40:54,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... [2018-10-27 13:40:54,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:40:54,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:40:54,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:40:54,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:40:54,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:40:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:40:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:40:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:40:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:40:54,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:40:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:40:54,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:40:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:40:57,464 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:40:57,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:57 BoogieIcfgContainer [2018-10-27 13:40:57,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:40:57,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:40:57,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:40:57,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:40:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:40:53" (1/3) ... [2018-10-27 13:40:57,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1716ddae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:57, skipping insertion in model container [2018-10-27 13:40:57,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:54" (2/3) ... [2018-10-27 13:40:57,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1716ddae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:57, skipping insertion in model container [2018-10-27 13:40:57,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:57" (3/3) ... [2018-10-27 13:40:57,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label25_true-unreach-call.c [2018-10-27 13:40:57,486 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:40:57,494 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:40:57,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:40:57,555 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:40:57,555 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:40:57,555 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:40:57,555 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:40:57,556 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:40:57,556 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:40:57,556 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:40:57,556 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:40:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 13:40:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-27 13:40:57,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:40:57,594 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:40:57,597 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:40:57,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:40:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash 382760497, now seen corresponding path program 1 times [2018-10-27 13:40:57,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:40:57,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:57,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:40:57,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:57,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:40:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:40:58,115 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:40:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:40:58,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:40:58,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 13:40:58,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:40:58,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 13:40:58,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 13:40:58,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:40:58,275 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 13:41:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:00,158 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 13:41:00,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 13:41:00,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-10-27 13:41:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:00,178 INFO L225 Difference]: With dead ends: 574 [2018-10-27 13:41:00,179 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 13:41:00,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:41:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 13:41:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 13:41:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 13:41:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-10-27 13:41:00,267 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 71 [2018-10-27 13:41:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:00,268 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-10-27 13:41:00,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 13:41:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-10-27 13:41:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 13:41:00,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:00,277 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 13:41:00,278 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:00,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1446129720, now seen corresponding path program 1 times [2018-10-27 13:41:00,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:00,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:00,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:00,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:00,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:41:00,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:41:00,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:41:00,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:00,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:41:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:41:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:41:00,647 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-10-27 13:41:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:02,847 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-10-27 13:41:02,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:41:02,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-27 13:41:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:02,856 INFO L225 Difference]: With dead ends: 1002 [2018-10-27 13:41:02,857 INFO L226 Difference]: Without dead ends: 652 [2018-10-27 13:41:02,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 13:41:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-10-27 13:41:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-10-27 13:41:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-10-27 13:41:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-10-27 13:41:02,912 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 141 [2018-10-27 13:41:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:02,913 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-10-27 13:41:02,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:41:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-10-27 13:41:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-27 13:41:02,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:02,918 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 13:41:02,919 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:02,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:02,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1467562684, now seen corresponding path program 1 times [2018-10-27 13:41:02,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:02,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:02,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:02,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:02,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:41:03,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:41:03,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 13:41:03,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:03,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 13:41:03,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 13:41:03,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:41:03,145 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-10-27 13:41:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:06,511 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-10-27 13:41:06,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 13:41:06,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-27 13:41:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:06,524 INFO L225 Difference]: With dead ends: 2128 [2018-10-27 13:41:06,524 INFO L226 Difference]: Without dead ends: 904 [2018-10-27 13:41:06,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 13:41:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-10-27 13:41:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-10-27 13:41:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-10-27 13:41:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-10-27 13:41:06,592 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 151 [2018-10-27 13:41:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:06,593 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-10-27 13:41:06,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 13:41:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-10-27 13:41:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 13:41:06,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:06,599 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 13:41:06,599 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:06,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:06,600 INFO L82 PathProgramCache]: Analyzing trace with hash -774507349, now seen corresponding path program 1 times [2018-10-27 13:41:06,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:06,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:06,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:06,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:06,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:06,912 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:41:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:41:07,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:41:07,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:41:07,259 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:07,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:41:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:41:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:41:07,261 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-10-27 13:41:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:08,684 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-10-27 13:41:08,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:41:08,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-10-27 13:41:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:08,700 INFO L225 Difference]: With dead ends: 2127 [2018-10-27 13:41:08,700 INFO L226 Difference]: Without dead ends: 1229 [2018-10-27 13:41:08,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 13:41:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-27 13:41:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-10-27 13:41:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-10-27 13:41:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-10-27 13:41:08,755 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 194 [2018-10-27 13:41:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:08,756 INFO L481 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-10-27 13:41:08,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:41:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-10-27 13:41:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 13:41:08,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:08,763 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:41:08,763 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:08,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:08,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1703489504, now seen corresponding path program 1 times [2018-10-27 13:41:08,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:08,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:08,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:08,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:08,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 128 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 13:41:09,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:41:09,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:41:09,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-27 13:41:09,357 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:41:09,434 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:41:09,435 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:41:10,066 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:41:10,067 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 13:41:10,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:10,099 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:41:10,868 INFO L227 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 73.93% of their original sizes. [2018-10-27 13:41:10,868 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:41:11,848 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-10-27 13:41:11,848 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:41:11,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:41:11,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-27 13:41:11,850 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:11,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 13:41:11,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 13:41:11,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:41:11,851 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 10 states. [2018-10-27 13:41:15,529 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:43:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:43:50,430 INFO L93 Difference]: Finished difference Result 2559 states and 3488 transitions. [2018-10-27 13:43:50,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 13:43:50,431 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 242 [2018-10-27 13:43:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:43:50,438 INFO L225 Difference]: With dead ends: 2559 [2018-10-27 13:43:50,438 INFO L226 Difference]: Without dead ends: 1357 [2018-10-27 13:43:50,444 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 204 SyntacticMatches, 29 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-27 13:43:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2018-10-27 13:43:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1352. [2018-10-27 13:43:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-27 13:43:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-10-27 13:43:50,482 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 242 [2018-10-27 13:43:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:43:50,483 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-10-27 13:43:50,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 13:43:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-10-27 13:43:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-27 13:43:50,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:43:50,492 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 13:43:50,493 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:43:50,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:43:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash -677086258, now seen corresponding path program 1 times [2018-10-27 13:43:50,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:43:50,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:43:50,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:43:50,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:43:50,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:43:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:43:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 266 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 13:43:51,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:43:51,416 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:43:51,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-27 13:43:51,416 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:43:51,420 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:43:51,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:43:51,488 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:43:51,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:43:51,857 INFO L272 AbstractInterpreter]: Visited 97 different actions 461 times. Merged at 5 different actions 20 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 13:43:51,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:43:51,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:43:52,383 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 76.11% of their original sizes. [2018-10-27 13:43:52,384 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:43:53,149 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-10-27 13:43:53,149 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:43:53,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:43:53,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 33 [2018-10-27 13:43:53,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:43:53,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 13:43:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 13:43:53,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2018-10-27 13:43:53,152 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown