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/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:29:49,542 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:29:49,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:29:49,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:29:49,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:29:49,562 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:29:49,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:29:49,565 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:29:49,567 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:29:49,568 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:29:49,569 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:29:49,569 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:29:49,570 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:29:49,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:29:49,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:29:49,573 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:29:49,574 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:29:49,576 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:29:49,578 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:29:49,579 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:29:49,580 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:29:49,581 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:29:49,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:29:49,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:29:49,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:29:49,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:29:49,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:29:49,587 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:29:49,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:29:49,589 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:29:49,589 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:29:49,590 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:29:49,590 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:29:49,590 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:29:49,591 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:29:49,592 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:29:49,592 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 16:29:49,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:29:49,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:29:49,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:29:49,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:29:49,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:29:49,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:29:49,614 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:29:49,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:29:49,614 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:29:49,615 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:29:49,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:29:49,615 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:29:49,615 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:29:49,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:29:49,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:29:49,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:29:49,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:29:49,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:29:49,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:29:49,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:29:49,617 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:29:49,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:29:49,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:29:49,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:29:49,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:29:49,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:29:49,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:29:49,619 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:29:49,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:29:49,619 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:29:49,619 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:29:49,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:29:49,620 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:29:49,620 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:29:49,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:29:49,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:29:49,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:29:49,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:29:49,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:29:49,683 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:29:49,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-11-12 16:29:49,750 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605a9583/fb69f41c575041b6bae741a7498852e8/FLAG2f4995328 [2018-11-12 16:29:50,376 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:29:50,378 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-11-12 16:29:50,396 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605a9583/fb69f41c575041b6bae741a7498852e8/FLAG2f4995328 [2018-11-12 16:29:50,415 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f605a9583/fb69f41c575041b6bae741a7498852e8 [2018-11-12 16:29:50,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:29:50,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:29:50,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:29:50,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:29:50,438 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:29:50,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:29:50" (1/1) ... [2018-11-12 16:29:50,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534a04b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:50, skipping insertion in model container [2018-11-12 16:29:50,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:29:50" (1/1) ... [2018-11-12 16:29:50,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:29:50,535 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:29:51,027 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:29:51,038 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:29:51,222 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:29:51,249 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:29:51,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51 WrapperNode [2018-11-12 16:29:51,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:29:51,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:29:51,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:29:51,251 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:29:51,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:29:51,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:29:51,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:29:51,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:29:51,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (1/1) ... [2018-11-12 16:29:51,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:29:51,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:29:51,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:29:51,555 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:29:51,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (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 16:29:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:29:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:29:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:29:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:29:51,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:29:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:29:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:29:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:29:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:29:55,199 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:29:55,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:29:55 BoogieIcfgContainer [2018-11-12 16:29:55,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:29:55,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:29:55,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:29:55,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:29:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:29:50" (1/3) ... [2018-11-12 16:29:55,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bcec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:29:55, skipping insertion in model container [2018-11-12 16:29:55,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:29:51" (2/3) ... [2018-11-12 16:29:55,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bcec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:29:55, skipping insertion in model container [2018-11-12 16:29:55,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:29:55" (3/3) ... [2018-11-12 16:29:55,209 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-11-12 16:29:55,220 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:29:55,229 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:29:55,246 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:29:55,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:29:55,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:29:55,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:29:55,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:29:55,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:29:55,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:29:55,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:29:55,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:29:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 16:29:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-12 16:29:55,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:55,332 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] [2018-11-12 16:29:55,335 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:55,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:55,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-11-12 16:29:55,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:55,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:55,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:55,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:55,393 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:55,739 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:29:55,836 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 16:29:55,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:29:55,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:29:55,840 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:29:55,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:29:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:29:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:29:55,866 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 16:29:57,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:57,489 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 16:29:57,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:29:57,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-12 16:29:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:57,513 INFO L225 Difference]: With dead ends: 691 [2018-11-12 16:29:57,514 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 16:29:57,523 INFO L604 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 [2018-11-12 16:29:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 16:29:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 16:29:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 16:29:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-11-12 16:29:57,609 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-11-12 16:29:57,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:57,610 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-11-12 16:29:57,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:29:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-11-12 16:29:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-12 16:29:57,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:57,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:57,618 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:57,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-11-12 16:29:57,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:57,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:57,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:57,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:57,621 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:29:57,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:29:57,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:29:57,914 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:29:57,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:29:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:29:57,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:29:57,917 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-11-12 16:30:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:01,159 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-11-12 16:30:01,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:30:01,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-11-12 16:30:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:01,179 INFO L225 Difference]: With dead ends: 1416 [2018-11-12 16:30:01,179 INFO L226 Difference]: Without dead ends: 988 [2018-11-12 16:30:01,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:30:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-11-12 16:30:01,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-11-12 16:30:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-11-12 16:30:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-11-12 16:30:01,256 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-11-12 16:30:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:01,256 INFO L480 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-11-12 16:30:01,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:30:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-11-12 16:30:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-12 16:30:01,267 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:01,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:01,267 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:01,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:01,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-11-12 16:30:01,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:01,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:01,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:01,270 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:01,642 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:30:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:30:02,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:30:02,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:30:02,026 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:02,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:30:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:30:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:30:02,028 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-11-12 16:30:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:05,287 INFO L93 Difference]: Finished difference Result 2347 states and 3916 transitions. [2018-11-12 16:30:05,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:30:05,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-12 16:30:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:05,301 INFO L225 Difference]: With dead ends: 2347 [2018-11-12 16:30:05,301 INFO L226 Difference]: Without dead ends: 1380 [2018-11-12 16:30:05,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:30:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2018-11-12 16:30:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1352. [2018-11-12 16:30:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-12 16:30:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-11-12 16:30:05,366 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-11-12 16:30:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:05,367 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-11-12 16:30:05,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:30:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-11-12 16:30:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-12 16:30:05,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:05,376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:30:05,376 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:05,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:05,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1455943783, now seen corresponding path program 1 times [2018-11-12 16:30:05,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:05,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:05,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:05,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:05,378 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:30:05,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:30:05,887 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:30:05,888 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-11-12 16:30:05,892 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:30:05,948 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:30:05,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:30:06,434 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:30:06,460 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:30:06,462 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Performed 642 root evaluator evaluations with a maximum evaluation depth of 6. Performed 642 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:30:06,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:06,505 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:30:06,989 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.57% of their original sizes. [2018-11-12 16:30:06,991 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:30:07,334 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-11-12 16:30:07,334 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:30:07,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:30:07,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 16:30:07,336 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:07,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:30:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:30:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:30:07,337 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-11-12 16:30:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:16,641 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-11-12 16:30:16,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:30:16,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-11-12 16:30:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:16,651 INFO L225 Difference]: With dead ends: 2883 [2018-11-12 16:30:16,652 INFO L226 Difference]: Without dead ends: 1537 [2018-11-12 16:30:16,657 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:30:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-11-12 16:30:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-11-12 16:30:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-11-12 16:30:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-11-12 16:30:16,704 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 181 [2018-11-12 16:30:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:16,706 INFO L480 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-11-12 16:30:16,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:30:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-11-12 16:30:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-12 16:30:16,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:16,713 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:30:16,713 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:16,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:16,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1502222280, now seen corresponding path program 1 times [2018-11-12 16:30:16,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:16,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:16,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:16,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:16,716 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-12 16:30:17,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:30:17,435 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:30:17,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-12 16:30:17,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:30:17,440 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:30:17,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:30:17,573 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:30:17,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:30:17,751 INFO L272 AbstractInterpreter]: Visited 94 different actions 184 times. Merged at 5 different actions 7 times. Never widened. Performed 2349 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2349 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 16:30:17,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:17,790 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:30:18,386 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 78.12% of their original sizes. [2018-11-12 16:30:18,386 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:30:20,139 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-12 16:30:20,139 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:30:20,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:30:20,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [7] total 33 [2018-11-12 16:30:20,140 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:20,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-12 16:30:20,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-12 16:30:20,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2018-11-12 16:30:20,142 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 28 states. [2018-11-12 16:30:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:52,170 INFO L93 Difference]: Finished difference Result 3597 states and 5317 transitions. [2018-11-12 16:30:52,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:30:52,171 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 266 [2018-11-12 16:30:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:52,182 INFO L225 Difference]: With dead ends: 3597 [2018-11-12 16:30:52,182 INFO L226 Difference]: Without dead ends: 2251 [2018-11-12 16:30:52,189 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=320, Invalid=1572, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 16:30:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2018-11-12 16:30:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2243. [2018-11-12 16:30:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2018-11-12 16:30:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3058 transitions. [2018-11-12 16:30:52,258 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3058 transitions. Word has length 266 [2018-11-12 16:30:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:52,259 INFO L480 AbstractCegarLoop]: Abstraction has 2243 states and 3058 transitions. [2018-11-12 16:30:52,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-12 16:30:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3058 transitions. [2018-11-12 16:30:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-12 16:30:52,266 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:52,266 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:52,267 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:52,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:52,267 INFO L82 PathProgramCache]: Analyzing trace with hash -669504180, now seen corresponding path program 1 times [2018-11-12 16:30:52,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:52,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:52,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:52,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:52,269 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:30:53,368 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:30:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 223 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:30:53,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:30:53,786 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:30:53,786 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 293 with the following transitions: [2018-11-12 16:30:53,787 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:30:53,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:30:53,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:30:53,850 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:30:53,981 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:30:53,981 INFO L272 AbstractInterpreter]: Visited 120 different actions 236 times. Merged at 5 different actions 7 times. Never widened. Performed 3039 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3039 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 16:30:53,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:53,989 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:30:54,312 INFO L227 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 77.92% of their original sizes. [2018-11-12 16:30:54,312 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:30:54,685 INFO L415 sIntCurrentIteration]: We unified 291 AI predicates to 291 [2018-11-12 16:30:54,685 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:30:54,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:30:54,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [14] total 30 [2018-11-12 16:30:54,686 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:30:54,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:30:54,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:30:54,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:30:54,687 INFO L87 Difference]: Start difference. First operand 2243 states and 3058 transitions. Second operand 18 states. [2018-11-12 16:31:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:05,745 INFO L93 Difference]: Finished difference Result 3962 states and 5637 transitions. [2018-11-12 16:31:05,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 16:31:05,746 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 292 [2018-11-12 16:31:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:05,757 INFO L225 Difference]: With dead ends: 3962 [2018-11-12 16:31:05,758 INFO L226 Difference]: Without dead ends: 2616 [2018-11-12 16:31:05,764 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 311 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 16:31:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2018-11-12 16:31:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2611. [2018-11-12 16:31:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2018-11-12 16:31:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3454 transitions. [2018-11-12 16:31:05,830 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3454 transitions. Word has length 292 [2018-11-12 16:31:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:05,830 INFO L480 AbstractCegarLoop]: Abstraction has 2611 states and 3454 transitions. [2018-11-12 16:31:05,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:31:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3454 transitions. [2018-11-12 16:31:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-12 16:31:05,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:05,838 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:31:05,838 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:05,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash 783648596, now seen corresponding path program 1 times [2018-11-12 16:31:05,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:05,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:05,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:05,840 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-12 16:31:06,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:06,108 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:06,109 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-11-12 16:31:06,109 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:06,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:06,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:06,246 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:31:06,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:31:06,356 INFO L272 AbstractInterpreter]: Visited 120 different actions 357 times. Merged at 8 different actions 19 times. Never widened. Performed 3440 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3440 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:31:06,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:06,367 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:31:06,663 INFO L227 lantSequenceWeakener]: Weakened 325 states. On average, predicates are now at 80.04% of their original sizes. [2018-11-12 16:31:06,663 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:31:06,747 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-11-12 16:31:06,748 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:31:06,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:31:06,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 16:31:06,748 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:31:06,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:31:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:31:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:31:06,749 INFO L87 Difference]: Start difference. First operand 2611 states and 3454 transitions. Second operand 10 states. [2018-11-12 16:31:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:11,756 INFO L93 Difference]: Finished difference Result 4549 states and 6505 transitions. [2018-11-12 16:31:11,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:31:11,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 328 [2018-11-12 16:31:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:11,772 INFO L225 Difference]: With dead ends: 4549 [2018-11-12 16:31:11,772 INFO L226 Difference]: Without dead ends: 3203 [2018-11-12 16:31:11,780 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:31:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2018-11-12 16:31:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2980. [2018-11-12 16:31:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2980 states. [2018-11-12 16:31:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 3914 transitions. [2018-11-12 16:31:11,868 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 3914 transitions. Word has length 328 [2018-11-12 16:31:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:11,868 INFO L480 AbstractCegarLoop]: Abstraction has 2980 states and 3914 transitions. [2018-11-12 16:31:11,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:31:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 3914 transitions. [2018-11-12 16:31:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-11-12 16:31:11,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:11,884 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:11,884 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:11,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:11,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1714862405, now seen corresponding path program 1 times [2018-11-12 16:31:11,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:11,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:11,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:11,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:11,886 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-12 16:31:12,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:31:12,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:31:12,494 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:31:12,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:31:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:31:12,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:31:12,495 INFO L87 Difference]: Start difference. First operand 2980 states and 3914 transitions. Second operand 4 states. [2018-11-12 16:31:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:14,019 INFO L93 Difference]: Finished difference Result 5349 states and 7580 transitions. [2018-11-12 16:31:14,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:31:14,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2018-11-12 16:31:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:14,041 INFO L225 Difference]: With dead ends: 5349 [2018-11-12 16:31:14,042 INFO L226 Difference]: Without dead ends: 3634 [2018-11-12 16:31:14,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:31:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2018-11-12 16:31:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2018-11-12 16:31:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2018-11-12 16:31:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 4662 transitions. [2018-11-12 16:31:14,147 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 4662 transitions. Word has length 431 [2018-11-12 16:31:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:14,148 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 4662 transitions. [2018-11-12 16:31:14,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:31:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 4662 transitions. [2018-11-12 16:31:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-12 16:31:14,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:14,165 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 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] [2018-11-12 16:31:14,166 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:14,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash -786345636, now seen corresponding path program 1 times [2018-11-12 16:31:14,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:14,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:14,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:14,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:14,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 185 proven. 166 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-12 16:31:14,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:14,816 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:14,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-12 16:31:14,817 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:14,820 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:14,820 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:14,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:31:15,339 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:31:15,340 INFO L272 AbstractInterpreter]: Visited 123 different actions 364 times. Merged at 7 different actions 17 times. Never widened. Performed 5049 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5049 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:31:15,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:15,368 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:31:16,060 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-12 16:31:16,060 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:31:16,786 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-11-12 16:31:16,787 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:31:16,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:31:16,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-12 16:31:16,787 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:31:16,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-12 16:31:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-12 16:31:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:31:16,789 INFO L87 Difference]: Start difference. First operand 3634 states and 4662 transitions. Second operand 25 states. [2018-11-12 16:31:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:40,330 INFO L93 Difference]: Finished difference Result 7405 states and 9638 transitions. [2018-11-12 16:31:40,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:31:40,330 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 434 [2018-11-12 16:31:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:40,350 INFO L225 Difference]: With dead ends: 7405 [2018-11-12 16:31:40,350 INFO L226 Difference]: Without dead ends: 5036 [2018-11-12 16:31:40,358 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 458 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2018-11-12 16:31:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2018-11-12 16:31:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4251. [2018-11-12 16:31:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2018-11-12 16:31:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 5330 transitions. [2018-11-12 16:31:40,461 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 5330 transitions. Word has length 434 [2018-11-12 16:31:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:40,462 INFO L480 AbstractCegarLoop]: Abstraction has 4251 states and 5330 transitions. [2018-11-12 16:31:40,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-12 16:31:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 5330 transitions. [2018-11-12 16:31:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-11-12 16:31:40,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:40,476 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:40,477 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:40,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -417965624, now seen corresponding path program 1 times [2018-11-12 16:31:40,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:40,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:40,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:40,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:40,479 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:41,803 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:31:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 326 proven. 289 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:31:43,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:43,019 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:43,019 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-11-12 16:31:43,020 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:43,024 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:43,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:43,185 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:31:43,902 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:31:43,902 INFO L272 AbstractInterpreter]: Visited 191 different actions 956 times. Merged at 9 different actions 49 times. Widened at 1 different actions 2 times. Performed 11516 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11516 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:31:43,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:43,910 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:31:43,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:43,910 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 16:31:43,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:43,921 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:31:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:44,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:31:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 575 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-12 16:31:44,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:31:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 324 proven. 94 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-11-12 16:31:45,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:31:45,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-12 16:31:45,824 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:31:45,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:31:45,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:31:45,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:31:45,826 INFO L87 Difference]: Start difference. First operand 4251 states and 5330 transitions. Second operand 17 states. [2018-11-12 16:31:46,394 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-11-12 16:31:52,034 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-12 16:31:53,655 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-12 16:31:55,849 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-11-12 16:31:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:31:57,842 INFO L93 Difference]: Finished difference Result 13695 states and 18282 transitions. [2018-11-12 16:31:57,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-12 16:31:57,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 526 [2018-11-12 16:31:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:31:57,883 INFO L225 Difference]: With dead ends: 13695 [2018-11-12 16:31:57,883 INFO L226 Difference]: Without dead ends: 9822 [2018-11-12 16:31:57,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1085 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-12 16:31:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2018-11-12 16:31:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 9334. [2018-11-12 16:31:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9334 states. [2018-11-12 16:31:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9334 states to 9334 states and 11480 transitions. [2018-11-12 16:31:58,147 INFO L78 Accepts]: Start accepts. Automaton has 9334 states and 11480 transitions. Word has length 526 [2018-11-12 16:31:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:31:58,148 INFO L480 AbstractCegarLoop]: Abstraction has 9334 states and 11480 transitions. [2018-11-12 16:31:58,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:31:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 9334 states and 11480 transitions. [2018-11-12 16:31:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-12 16:31:58,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:31:58,176 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:31:58,176 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:31:58,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:31:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash 725218240, now seen corresponding path program 1 times [2018-11-12 16:31:58,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:31:58,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:58,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:31:58,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:31:58,178 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:31:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:31:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 434 proven. 425 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-11-12 16:31:59,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:31:59,646 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:31:59,646 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-11-12 16:31:59,646 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:31:59,649 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:31:59,650 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:31:59,722 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:00,117 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:00,117 INFO L272 AbstractInterpreter]: Visited 125 different actions 616 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Performed 6313 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6313 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:00,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:00,125 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:00,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:00,125 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:00,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:00,134 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:00,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 747 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-12 16:32:00,772 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 428 proven. 94 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-11-12 16:32:01,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:01,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 16:32:01,470 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:01,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:32:01,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:32:01,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:32:01,472 INFO L87 Difference]: Start difference. First operand 9334 states and 11480 transitions. Second operand 17 states. [2018-11-12 16:32:08,975 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2018-11-12 16:32:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:09,102 INFO L93 Difference]: Finished difference Result 16556 states and 22130 transitions. [2018-11-12 16:32:09,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:32:09,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 532 [2018-11-12 16:32:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:09,124 INFO L225 Difference]: With dead ends: 16556 [2018-11-12 16:32:09,124 INFO L226 Difference]: Without dead ends: 5573 [2018-11-12 16:32:09,163 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1074 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2018-11-12 16:32:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2018-11-12 16:32:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5347. [2018-11-12 16:32:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5347 states. [2018-11-12 16:32:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 6244 transitions. [2018-11-12 16:32:09,272 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 6244 transitions. Word has length 532 [2018-11-12 16:32:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:09,273 INFO L480 AbstractCegarLoop]: Abstraction has 5347 states and 6244 transitions. [2018-11-12 16:32:09,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:32:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 6244 transitions. [2018-11-12 16:32:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-11-12 16:32:09,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:09,284 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:09,284 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:09,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:09,285 INFO L82 PathProgramCache]: Analyzing trace with hash 512824619, now seen corresponding path program 2 times [2018-11-12 16:32:09,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:09,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:09,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:09,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:09,286 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 466 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-11-12 16:32:09,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:09,917 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:09,917 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 16:32:09,917 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:32:09,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:09,918 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:09,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 16:32:09,928 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 16:32:10,049 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-12 16:32:10,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 16:32:10,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 696 proven. 44 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-11-12 16:32:10,349 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 734 proven. 94 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-11-12 16:32:10,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:10,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2018-11-12 16:32:10,860 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:10,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:32:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:32:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:32:10,861 INFO L87 Difference]: Start difference. First operand 5347 states and 6244 transitions. Second operand 9 states. [2018-11-12 16:32:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:14,175 INFO L93 Difference]: Finished difference Result 15762 states and 21281 transitions. [2018-11-12 16:32:14,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 16:32:14,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 637 [2018-11-12 16:32:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:14,244 INFO L225 Difference]: With dead ends: 15762 [2018-11-12 16:32:14,244 INFO L226 Difference]: Without dead ends: 10976 [2018-11-12 16:32:14,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1270 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:32:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2018-11-12 16:32:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10270. [2018-11-12 16:32:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10270 states. [2018-11-12 16:32:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 11981 transitions. [2018-11-12 16:32:14,563 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 11981 transitions. Word has length 637 [2018-11-12 16:32:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:14,565 INFO L480 AbstractCegarLoop]: Abstraction has 10270 states and 11981 transitions. [2018-11-12 16:32:14,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:32:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 11981 transitions. [2018-11-12 16:32:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-11-12 16:32:14,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:14,576 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-12 16:32:14,576 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:14,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash -982755100, now seen corresponding path program 1 times [2018-11-12 16:32:14,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:14,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:14,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 16:32:14,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:14,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 473 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-11-12 16:32:15,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:15,443 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:15,444 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 645 with the following transitions: [2018-11-12 16:32:15,444 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:15,447 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:15,447 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:15,638 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:16,679 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:16,680 INFO L272 AbstractInterpreter]: Visited 192 different actions 1163 times. Merged at 10 different actions 71 times. Widened at 1 different actions 3 times. Performed 14200 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14200 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 16 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:16,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:16,689 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:16,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:16,689 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:16,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:16,698 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:16,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 814 proven. 2 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-11-12 16:32:17,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:17,588 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-12 16:32:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 473 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-11-12 16:32:18,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:18,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 16:32:18,037 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:18,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:32:18,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:32:18,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:32:18,038 INFO L87 Difference]: Start difference. First operand 10270 states and 11981 transitions. Second operand 7 states. [2018-11-12 16:32:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:20,529 INFO L93 Difference]: Finished difference Result 24028 states and 32212 transitions. [2018-11-12 16:32:20,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:32:20,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2018-11-12 16:32:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:20,624 INFO L225 Difference]: With dead ends: 24028 [2018-11-12 16:32:20,625 INFO L226 Difference]: Without dead ends: 14319 [2018-11-12 16:32:20,692 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:32:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14319 states. [2018-11-12 16:32:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14319 to 13779. [2018-11-12 16:32:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13779 states. [2018-11-12 16:32:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 16363 transitions. [2018-11-12 16:32:21,112 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 16363 transitions. Word has length 644 [2018-11-12 16:32:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:21,113 INFO L480 AbstractCegarLoop]: Abstraction has 13779 states and 16363 transitions. [2018-11-12 16:32:21,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:32:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 16363 transitions. [2018-11-12 16:32:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2018-11-12 16:32:21,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:21,128 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:32:21,128 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:21,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1741590995, now seen corresponding path program 1 times [2018-11-12 16:32:21,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:21,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:21,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:21,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:21,130 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 472 proven. 537 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-11-12 16:32:23,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:23,148 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:23,148 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 690 with the following transitions: [2018-11-12 16:32:23,149 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:23,151 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:23,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:23,315 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:24,244 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:24,244 INFO L272 AbstractInterpreter]: Visited 192 different actions 1156 times. Merged at 10 different actions 63 times. Widened at 1 different actions 1 times. Performed 14416 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14416 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 17 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:32:24,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:24,255 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:24,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:24,255 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:24,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:24,265 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:24,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 859 proven. 2 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-11-12 16:32:25,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:25,525 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 17 [2018-11-12 16:32:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 518 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-11-12 16:32:26,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:26,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-12 16:32:26,219 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:26,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:32:26,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:32:26,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:32:26,221 INFO L87 Difference]: Start difference. First operand 13779 states and 16363 transitions. Second operand 17 states. [2018-11-12 16:32:29,607 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-12 16:32:30,678 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-12 16:32:31,611 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-11-12 16:32:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:33,411 INFO L93 Difference]: Finished difference Result 31488 states and 39108 transitions. [2018-11-12 16:32:33,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-12 16:32:33,412 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 689 [2018-11-12 16:32:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:33,473 INFO L225 Difference]: With dead ends: 31488 [2018-11-12 16:32:33,474 INFO L226 Difference]: Without dead ends: 17902 [2018-11-12 16:32:33,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1400 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-11-12 16:32:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17902 states. [2018-11-12 16:32:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17902 to 17017. [2018-11-12 16:32:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17017 states. [2018-11-12 16:32:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17017 states to 17017 states and 20449 transitions. [2018-11-12 16:32:33,924 INFO L78 Accepts]: Start accepts. Automaton has 17017 states and 20449 transitions. Word has length 689 [2018-11-12 16:32:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:33,925 INFO L480 AbstractCegarLoop]: Abstraction has 17017 states and 20449 transitions. [2018-11-12 16:32:33,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:32:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 17017 states and 20449 transitions. [2018-11-12 16:32:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-11-12 16:32:33,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:33,939 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:32:33,940 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:33,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1268386348, now seen corresponding path program 1 times [2018-11-12 16:32:33,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:33,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:33,941 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 472 proven. 548 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-11-12 16:32:35,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:35,597 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:35,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 701 with the following transitions: [2018-11-12 16:32:35,598 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [910], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:35,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:35,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:35,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:36,900 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:36,901 INFO L272 AbstractInterpreter]: Visited 192 different actions 1154 times. Merged at 10 different actions 62 times. Widened at 1 different actions 1 times. Performed 14428 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14428 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 16 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:32:36,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:36,908 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:36,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:36,908 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:36,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:36,916 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:37,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 870 proven. 2 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-11-12 16:32:37,441 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 529 proven. 94 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-11-12 16:32:38,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:38,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-12 16:32:38,108 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:38,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:32:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:32:38,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:32:38,110 INFO L87 Difference]: Start difference. First operand 17017 states and 20449 transitions. Second operand 17 states. [2018-11-12 16:32:40,040 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 17 [2018-11-12 16:32:41,790 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-11-12 16:32:42,667 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-11-12 16:32:43,783 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-11-12 16:32:46,198 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-11-12 16:32:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:47,732 INFO L93 Difference]: Finished difference Result 36868 states and 47068 transitions. [2018-11-12 16:32:47,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-12 16:32:47,733 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 700 [2018-11-12 16:32:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:47,809 INFO L225 Difference]: With dead ends: 36868 [2018-11-12 16:32:47,809 INFO L226 Difference]: Without dead ends: 19894 [2018-11-12 16:32:47,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1492 GetRequests, 1429 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=819, Invalid=3341, Unknown=0, NotChecked=0, Total=4160 [2018-11-12 16:32:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19894 states. [2018-11-12 16:32:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19894 to 19726. [2018-11-12 16:32:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19726 states. [2018-11-12 16:32:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19726 states to 19726 states and 23760 transitions. [2018-11-12 16:32:48,342 INFO L78 Accepts]: Start accepts. Automaton has 19726 states and 23760 transitions. Word has length 700 [2018-11-12 16:32:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:48,343 INFO L480 AbstractCegarLoop]: Abstraction has 19726 states and 23760 transitions. [2018-11-12 16:32:48,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:32:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 19726 states and 23760 transitions. [2018-11-12 16:32:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-11-12 16:32:48,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:48,356 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:48,356 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:48,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:48,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2086951348, now seen corresponding path program 1 times [2018-11-12 16:32:48,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:48,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:48,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:48,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:48,358 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 664 proven. 94 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-11-12 16:32:49,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:49,268 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:49,268 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 805 with the following transitions: [2018-11-12 16:32:49,268 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:49,271 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:49,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:49,437 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:50,443 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:50,443 INFO L272 AbstractInterpreter]: Visited 193 different actions 1368 times. Merged at 11 different actions 89 times. Widened at 1 different actions 4 times. Performed 16305 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16305 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:50,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:50,451 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:50,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:50,451 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:50,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:50,459 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:50,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 1095 proven. 2 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2018-11-12 16:32:51,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 664 proven. 94 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-11-12 16:32:51,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:51,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 16:32:51,787 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:51,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:32:51,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:32:51,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:32:51,788 INFO L87 Difference]: Start difference. First operand 19726 states and 23760 transitions. Second operand 7 states. [2018-11-12 16:32:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:32:53,888 INFO L93 Difference]: Finished difference Result 38324 states and 46620 transitions. [2018-11-12 16:32:53,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:32:53,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2018-11-12 16:32:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:32:53,954 INFO L225 Difference]: With dead ends: 38324 [2018-11-12 16:32:53,955 INFO L226 Difference]: Without dead ends: 18972 [2018-11-12 16:32:54,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1610 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:32:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18972 states. [2018-11-12 16:32:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18972 to 18320. [2018-11-12 16:32:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18320 states. [2018-11-12 16:32:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18320 states to 18320 states and 21209 transitions. [2018-11-12 16:32:54,468 INFO L78 Accepts]: Start accepts. Automaton has 18320 states and 21209 transitions. Word has length 804 [2018-11-12 16:32:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:32:54,468 INFO L480 AbstractCegarLoop]: Abstraction has 18320 states and 21209 transitions. [2018-11-12 16:32:54,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:32:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 18320 states and 21209 transitions. [2018-11-12 16:32:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2018-11-12 16:32:54,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:32:54,482 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:54,482 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:32:54,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2058606555, now seen corresponding path program 1 times [2018-11-12 16:32:54,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:32:54,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:54,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:54,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:32:54,484 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:32:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 516 proven. 150 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2018-11-12 16:32:55,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:55,285 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:32:55,285 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 882 with the following transitions: [2018-11-12 16:32:55,285 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:32:55,289 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:32:55,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:32:55,543 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:32:56,787 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:32:56,788 INFO L272 AbstractInterpreter]: Visited 194 different actions 1186 times. Merged at 12 different actions 82 times. Widened at 1 different actions 2 times. Performed 13980 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13980 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:32:56,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:32:56,796 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:32:56,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:32:56,796 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:32:56,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:32:56,807 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:32:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:32:57,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:32:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 1461 proven. 2 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-11-12 16:32:57,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:32:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 516 proven. 150 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2018-11-12 16:32:58,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:32:58,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-11-12 16:32:58,008 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:32:58,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:32:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:32:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:32:58,010 INFO L87 Difference]: Start difference. First operand 18320 states and 21209 transitions. Second operand 10 states. [2018-11-12 16:33:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:01,232 INFO L93 Difference]: Finished difference Result 35495 states and 41139 transitions. [2018-11-12 16:33:01,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:33:01,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 881 [2018-11-12 16:33:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:01,269 INFO L225 Difference]: With dead ends: 35495 [2018-11-12 16:33:01,269 INFO L226 Difference]: Without dead ends: 17549 [2018-11-12 16:33:01,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1795 GetRequests, 1770 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:33:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17549 states. [2018-11-12 16:33:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17549 to 17310. [2018-11-12 16:33:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17310 states. [2018-11-12 16:33:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17310 states to 17310 states and 19038 transitions. [2018-11-12 16:33:01,549 INFO L78 Accepts]: Start accepts. Automaton has 17310 states and 19038 transitions. Word has length 881 [2018-11-12 16:33:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:01,549 INFO L480 AbstractCegarLoop]: Abstraction has 17310 states and 19038 transitions. [2018-11-12 16:33:01,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:33:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 17310 states and 19038 transitions. [2018-11-12 16:33:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2018-11-12 16:33:01,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:01,560 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:33:01,560 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:01,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1823294039, now seen corresponding path program 1 times [2018-11-12 16:33:01,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:01,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:01,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:01,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:01,562 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 548 proven. 1103 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2018-11-12 16:33:04,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:04,277 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:04,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 900 with the following transitions: [2018-11-12 16:33:04,278 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:04,281 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:04,281 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:04,453 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:05,165 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:05,165 INFO L272 AbstractInterpreter]: Visited 194 different actions 984 times. Merged at 12 different actions 62 times. Widened at 1 different actions 1 times. Performed 11731 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11731 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 19 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 16:33:05,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:05,174 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:05,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:05,174 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:05,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:05,183 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:05,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1637 proven. 2 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-11-12 16:33:06,284 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:06,791 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 16:33:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 549 proven. 343 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2018-11-12 16:33:07,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:33:07,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-12 16:33:07,543 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:33:07,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:33:07,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:33:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:33:07,545 INFO L87 Difference]: Start difference. First operand 17310 states and 19038 transitions. Second operand 18 states. [2018-11-12 16:33:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:15,592 INFO L93 Difference]: Finished difference Result 32633 states and 36020 transitions. [2018-11-12 16:33:15,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-12 16:33:15,593 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 899 [2018-11-12 16:33:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:15,621 INFO L225 Difference]: With dead ends: 32633 [2018-11-12 16:33:15,621 INFO L226 Difference]: Without dead ends: 15697 [2018-11-12 16:33:15,648 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1882 GetRequests, 1822 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=749, Invalid=3033, Unknown=0, NotChecked=0, Total=3782 [2018-11-12 16:33:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15697 states. [2018-11-12 16:33:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15697 to 15537. [2018-11-12 16:33:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15537 states. [2018-11-12 16:33:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15537 states to 15537 states and 16643 transitions. [2018-11-12 16:33:15,852 INFO L78 Accepts]: Start accepts. Automaton has 15537 states and 16643 transitions. Word has length 899 [2018-11-12 16:33:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:15,852 INFO L480 AbstractCegarLoop]: Abstraction has 15537 states and 16643 transitions. [2018-11-12 16:33:15,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:33:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 15537 states and 16643 transitions. [2018-11-12 16:33:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2018-11-12 16:33:15,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:15,862 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 16:33:15,862 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:15,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:15,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1680904072, now seen corresponding path program 1 times [2018-11-12 16:33:15,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:15,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:15,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:15,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:15,864 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 1270 proven. 90 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2018-11-12 16:33:17,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:17,458 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:17,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 945 with the following transitions: [2018-11-12 16:33:17,458 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:17,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:17,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:17,684 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:33:18,462 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:33:18,462 INFO L272 AbstractInterpreter]: Visited 194 different actions 982 times. Merged at 11 different actions 60 times. Widened at 1 different actions 2 times. Performed 12808 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12808 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 19 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 16:33:18,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:18,469 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:33:18,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:18,469 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:18,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:18,478 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:18,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 1270 proven. 6 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2018-11-12 16:33:19,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:33:19,944 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:33:20,051 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:33:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 1270 proven. 94 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2018-11-12 16:33:20,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:33:20,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2018-11-12 16:33:20,793 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:33:20,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:33:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:33:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:33:20,795 INFO L87 Difference]: Start difference. First operand 15537 states and 16643 transitions. Second operand 10 states. [2018-11-12 16:33:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:33:24,451 INFO L93 Difference]: Finished difference Result 34036 states and 36790 transitions. [2018-11-12 16:33:24,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:33:24,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 944 [2018-11-12 16:33:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:33:24,481 INFO L225 Difference]: With dead ends: 34036 [2018-11-12 16:33:24,481 INFO L226 Difference]: Without dead ends: 18873 [2018-11-12 16:33:24,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1910 GetRequests, 1888 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:33:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18873 states. [2018-11-12 16:33:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18873 to 16764. [2018-11-12 16:33:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16764 states. [2018-11-12 16:33:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 17965 transitions. [2018-11-12 16:33:24,751 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 17965 transitions. Word has length 944 [2018-11-12 16:33:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:33:24,752 INFO L480 AbstractCegarLoop]: Abstraction has 16764 states and 17965 transitions. [2018-11-12 16:33:24,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:33:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 17965 transitions. [2018-11-12 16:33:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2018-11-12 16:33:24,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:33:24,768 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:33:24,768 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:33:24,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:33:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash -494676864, now seen corresponding path program 1 times [2018-11-12 16:33:24,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:33:24,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:24,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:24,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:33:24,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:33:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 16:33:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4076 backedges. 1013 proven. 1836 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2018-11-12 16:33:27,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:27,499 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:33:27,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1195 with the following transitions: [2018-11-12 16:33:27,499 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:33:27,502 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:33:27,502 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:33:27,502 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:33:27,503 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:33:27,503 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:33:27,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:33:27,503 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:27,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:33:27,512 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:33:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:33:27,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:33:27,831 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:33:28,033 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:33:28,033 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:33:28,038 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:33:28,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:33:28 BoogieIcfgContainer [2018-11-12 16:33:28,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:33:28,039 INFO L168 Benchmark]: Toolchain (without parser) took 217610.56 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 800.9 MB in the end (delta: 619.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:33:28,040 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:33:28,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:28,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.8 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:28,042 INFO L168 Benchmark]: Boogie Preprocessor took 132.46 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 16:33:28,043 INFO L168 Benchmark]: RCFGBuilder took 3646.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:33:28,043 INFO L168 Benchmark]: TraceAbstraction took 212837.01 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 800.9 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:33:28,048 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 818.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 170.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.8 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.46 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 3646.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212837.01 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 800.9 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 1195 with TraceHistMax 10,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 212.7s OverallTime, 20 OverallIterations, 10 TraceHistogramMax, 151.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2525 SDtfs, 40852 SDslu, 4799 SDs, 0 SdLazy, 56567 SolverSat, 8073 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 16611 GetRequests, 16066 SyntacticMatches, 12 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6281 ImplicationChecksByTransitivity, 27.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19726occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.6s AbstIntTime, 15 AbstIntIterations, 5 AbstIntStrong, 0.9967328993363341 AbsIntWeakeningRatio, 0.10695187165775401 AbsIntAvgWeakeningVarsNumRemoved, 14.62566844919786 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 7239 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 26.2s InterpolantComputationTime, 16752 NumberOfCodeBlocks, 16531 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 23969 ConstructedInterpolants, 0 QuantifiedInterpolants, 62668179 SizeOfPredicates, 35 NumberOfNonLiveVariables, 10170 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 39 InterpolantComputations, 4 PerfectInterpolantSequences, 42739/47717 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown