java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:56:52,414 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:56:52,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:56:52,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:56:52,436 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:56:52,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:56:52,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:56:52,442 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:56:52,444 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:56:52,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:56:52,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:56:52,453 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:56:52,454 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:56:52,455 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:56:52,456 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:56:52,457 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:56:52,458 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:56:52,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:56:52,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:56:52,462 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:56:52,463 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:56:52,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:56:52,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:56:52,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:56:52,467 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:56:52,468 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:56:52,468 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:56:52,470 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:56:52,471 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:56:52,472 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:56:52,472 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:56:52,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:56:52,475 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:56:52,475 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:56:52,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:56:52,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:56:52,477 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 [2018-11-07 20:56:52,505 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:56:52,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:56:52,507 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:56:52,507 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:56:52,507 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:56:52,507 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:56:52,508 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:56:52,513 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:56:52,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:56:52,513 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:56:52,513 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:56:52,513 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:56:52,514 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:56:52,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:56:52,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:56:52,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:56:52,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:56:52,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:56:52,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:56:52,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:56:52,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:56:52,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:56:52,516 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:56:52,516 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:56:52,518 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:56:52,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:52,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:56:52,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:56:52,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:56:52,519 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:56:52,520 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:56:52,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:56:52,520 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:56:52,520 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:56:52,520 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:56:52,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:56:52,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:56:52,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:56:52,600 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:56:52,600 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:56:52,601 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-07 20:56:52,663 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1a8f26d/4af78c4101834b88b6937defed218cad/FLAG6b44f9697 [2018-11-07 20:56:53,309 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:56:53,310 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-07 20:56:53,333 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1a8f26d/4af78c4101834b88b6937defed218cad/FLAG6b44f9697 [2018-11-07 20:56:53,359 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1a8f26d/4af78c4101834b88b6937defed218cad [2018-11-07 20:56:53,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:56:53,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:56:53,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:53,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:56:53,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:56:53,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:53" (1/1) ... [2018-11-07 20:56:53,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b4c66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:53, skipping insertion in model container [2018-11-07 20:56:53,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:53" (1/1) ... [2018-11-07 20:56:53,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:56:53,507 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:56:54,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:54,291 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:56:54,557 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:54,580 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:56:54,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54 WrapperNode [2018-11-07 20:56:54,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:54,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:54,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:56:54,582 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:56:54,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:54,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:56:54,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:56:54,804 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:56:54,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:56:54,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:56:54,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:56:54,983 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:56:54,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:56:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:56:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:56:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:56:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:56:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:56:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:56:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:56:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:56:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:56:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:57:01,456 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:57:01,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:57:01 BoogieIcfgContainer [2018-11-07 20:57:01,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:57:01,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:57:01,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:57:01,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:57:01,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:56:53" (1/3) ... [2018-11-07 20:57:01,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8dccdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:57:01, skipping insertion in model container [2018-11-07 20:57:01,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54" (2/3) ... [2018-11-07 20:57:01,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8dccdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:57:01, skipping insertion in model container [2018-11-07 20:57:01,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:57:01" (3/3) ... [2018-11-07 20:57:01,468 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label56_true-unreach-call.c [2018-11-07 20:57:01,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:57:01,487 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:57:01,503 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:57:01,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:57:01,549 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:57:01,550 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:57:01,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:57:01,550 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:57:01,550 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:57:01,550 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:57:01,550 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:57:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:57:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 20:57:01,600 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:01,601 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:01,603 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:01,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1440344268, now seen corresponding path program 1 times [2018-11-07 20:57:01,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:01,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:01,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:01,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:01,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:02,071 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:57:02,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:57:02,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:57:02,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:02,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:57:02,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:57:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:57:02,161 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:57:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:05,975 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:57:05,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:57:05,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 20:57:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:06,003 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:57:06,003 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:57:06,012 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 [2018-11-07 20:57:06,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:57:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:57:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:57:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 20:57:06,119 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 40 [2018-11-07 20:57:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:06,120 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 20:57:06,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:57:06,120 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 20:57:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 20:57:06,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:06,128 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:06,129 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:06,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 884268999, now seen corresponding path program 1 times [2018-11-07 20:57:06,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:06,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:06,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:06,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:06,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:57:06,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:57:06,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:57:06,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:06,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:57:06,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:57:06,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:57:06,520 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 20:57:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:13,859 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 20:57:13,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:57:13,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 20:57:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:13,884 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 20:57:13,885 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 20:57:13,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:57:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 20:57:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 20:57:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 20:57:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 20:57:13,980 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 133 [2018-11-07 20:57:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:13,981 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 20:57:13,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:57:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 20:57:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 20:57:13,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:13,990 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:13,991 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:13,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1634663824, now seen corresponding path program 1 times [2018-11-07 20:57:13,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:13,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:13,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:13,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:13,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:14,379 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 66 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:57:14,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:14,681 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:14,682 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 20:57:14,684 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:14,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:14,730 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:15,554 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:15,556 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:57:15,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:15,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:16,541 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 20:57:16,542 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:17,198 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 20:57:17,198 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:17,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:17,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:57:17,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:17,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:57:17,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:57:17,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:57:17,201 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 20:57:21,747 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:45,572 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-07 20:57:45,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:57:45,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2018-11-07 20:57:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:45,582 INFO L225 Difference]: With dead ends: 3187 [2018-11-07 20:57:45,582 INFO L226 Difference]: Without dead ends: 1768 [2018-11-07 20:57:45,587 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 215 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:57:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-07 20:57:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-07 20:57:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 20:57:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 20:57:45,632 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 244 [2018-11-07 20:57:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:45,633 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 20:57:45,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:57:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 20:57:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 20:57:45,641 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:45,641 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:45,642 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:45,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1999835890, now seen corresponding path program 1 times [2018-11-07 20:57:45,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:45,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:45,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:45,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:45,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:45,969 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 105 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:57:46,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:46,078 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:46,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 20:57:46,079 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:46,084 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:46,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:46,153 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:46,372 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:46,372 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:46,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:46,379 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:47,066 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-07 20:57:47,067 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:48,300 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-07 20:57:48,300 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:48,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:48,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:57:48,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:48,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:57:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:57:48,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:57:48,302 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 18 states. [2018-11-07 20:58:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:15,755 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-07 20:58:15,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:58:15,755 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 336 [2018-11-07 20:58:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:15,770 INFO L225 Difference]: With dead ends: 4356 [2018-11-07 20:58:15,770 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 20:58:15,775 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 304 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:58:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 20:58:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-07 20:58:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-07 20:58:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-07 20:58:15,845 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 336 [2018-11-07 20:58:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:15,846 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-07 20:58:15,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:58:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-07 20:58:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-11-07 20:58:15,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:15,855 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:58:15,856 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:15,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1855087594, now seen corresponding path program 1 times [2018-11-07 20:58:15,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:15,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:15,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:15,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:16,202 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:58:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:58:16,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:16,715 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:16,715 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-11-07 20:58:16,716 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:16,721 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:16,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:16,793 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:17,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:17,145 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:17,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:17,183 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:17,727 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-07 20:58:17,727 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:18,592 INFO L415 sIntCurrentIteration]: We unified 371 AI predicates to 371 [2018-11-07 20:58:18,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:18,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:18,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 20:58:18,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:18,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:58:18,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:58:18,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:58:18,595 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-07 20:59:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:04,480 INFO L93 Difference]: Finished difference Result 5358 states and 7703 transitions. [2018-11-07 20:59:04,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:59:04,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 372 [2018-11-07 20:59:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:04,496 INFO L225 Difference]: With dead ends: 5358 [2018-11-07 20:59:04,497 INFO L226 Difference]: Without dead ends: 3595 [2018-11-07 20:59:04,503 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 380 GetRequests, 341 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:59:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2018-11-07 20:59:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3363. [2018-11-07 20:59:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-11-07 20:59:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4280 transitions. [2018-11-07 20:59:04,595 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4280 transitions. Word has length 372 [2018-11-07 20:59:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:04,596 INFO L480 AbstractCegarLoop]: Abstraction has 3363 states and 4280 transitions. [2018-11-07 20:59:04,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:59:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4280 transitions. [2018-11-07 20:59:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-07 20:59:04,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:04,611 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:04,611 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:04,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:04,611 INFO L82 PathProgramCache]: Analyzing trace with hash -695554550, now seen corresponding path program 1 times [2018-11-07 20:59:04,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:04,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:04,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:04,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:04,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:05,005 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:05,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:05,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:05,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-07 20:59:05,504 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:05,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:05,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:05,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:05,831 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:05,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:05,841 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:06,323 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-07 20:59:06,323 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:08,264 INFO L415 sIntCurrentIteration]: We unified 483 AI predicates to 483 [2018-11-07 20:59:08,264 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:08,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:08,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:59:08,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:08,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:59:08,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:59:08,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:59:08,266 INFO L87 Difference]: Start difference. First operand 3363 states and 4280 transitions. Second operand 18 states. [2018-11-07 20:59:09,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:23,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:23,975 INFO L93 Difference]: Finished difference Result 6104 states and 8325 transitions. [2018-11-07 20:59:23,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:59:23,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 484 [2018-11-07 20:59:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:23,992 INFO L225 Difference]: With dead ends: 6104 [2018-11-07 20:59:23,992 INFO L226 Difference]: Without dead ends: 3999 [2018-11-07 20:59:23,999 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 499 GetRequests, 399 SyntacticMatches, 68 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 20:59:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2018-11-07 20:59:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3994. [2018-11-07 20:59:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2018-11-07 20:59:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 4945 transitions. [2018-11-07 20:59:24,103 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 4945 transitions. Word has length 484 [2018-11-07 20:59:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:24,104 INFO L480 AbstractCegarLoop]: Abstraction has 3994 states and 4945 transitions. [2018-11-07 20:59:24,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:59:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 4945 transitions. [2018-11-07 20:59:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-07 20:59:24,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:24,120 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:24,121 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:24,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:24,121 INFO L82 PathProgramCache]: Analyzing trace with hash -231752582, now seen corresponding path program 1 times [2018-11-07 20:59:24,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:24,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:24,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:24,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:24,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:24,524 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:25,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:25,731 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:25,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 493 with the following transitions: [2018-11-07 20:59:25,733 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:25,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:25,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:27,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:27,766 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:27,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:27,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:28,424 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-07 20:59:28,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:28,799 INFO L415 sIntCurrentIteration]: We unified 491 AI predicates to 491 [2018-11-07 20:59:28,799 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:28,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:28,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 20:59:28,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:28,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 20:59:28,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 20:59:28,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:59:28,801 INFO L87 Difference]: Start difference. First operand 3994 states and 4945 transitions. Second operand 23 states. [2018-11-07 20:59:31,585 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:59,973 INFO L93 Difference]: Finished difference Result 6740 states and 9001 transitions. [2018-11-07 20:59:59,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 20:59:59,973 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 492 [2018-11-07 20:59:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:59,992 INFO L225 Difference]: With dead ends: 6740 [2018-11-07 20:59:59,992 INFO L226 Difference]: Without dead ends: 4635 [2018-11-07 20:59:59,998 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 504 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 21:00:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2018-11-07 21:00:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2018-11-07 21:00:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2018-11-07 21:00:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5616 transitions. [2018-11-07 21:00:00,111 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5616 transitions. Word has length 492 [2018-11-07 21:00:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:00,112 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 5616 transitions. [2018-11-07 21:00:00,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 21:00:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5616 transitions. [2018-11-07 21:00:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-11-07 21:00:00,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:00,124 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:00,125 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:00,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:00,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1736295052, now seen corresponding path program 1 times [2018-11-07 21:00:00,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:00,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:00,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:00,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:00,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:00,516 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 21:00:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 232 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 21:00:01,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:01,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:01,560 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 577 with the following transitions: [2018-11-07 21:00:01,560 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 21:00:01,565 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:01,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:01,656 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:02,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:02,946 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 21:00:02,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:02,953 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:03,413 INFO L227 lantSequenceWeakener]: Weakened 573 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-07 21:00:03,413 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:03,508 INFO L415 sIntCurrentIteration]: We unified 575 AI predicates to 575 [2018-11-07 21:00:03,508 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:03,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:03,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 21:00:03,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:03,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:00:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:00:03,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:00:03,510 INFO L87 Difference]: Start difference. First operand 4627 states and 5616 transitions. Second operand 10 states. [2018-11-07 21:00:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:19,147 INFO L93 Difference]: Finished difference Result 7780 states and 10172 transitions. [2018-11-07 21:00:19,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 21:00:19,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 576 [2018-11-07 21:00:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:19,165 INFO L225 Difference]: With dead ends: 7780 [2018-11-07 21:00:19,166 INFO L226 Difference]: Without dead ends: 5335 [2018-11-07 21:00:19,173 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 583 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 21:00:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2018-11-07 21:00:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 5321. [2018-11-07 21:00:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5321 states. [2018-11-07 21:00:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 6358 transitions. [2018-11-07 21:00:19,288 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 6358 transitions. Word has length 576 [2018-11-07 21:00:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:19,289 INFO L480 AbstractCegarLoop]: Abstraction has 5321 states and 6358 transitions. [2018-11-07 21:00:19,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 21:00:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 6358 transitions. [2018-11-07 21:00:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2018-11-07 21:00:19,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:19,303 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:19,304 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:19,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:19,304 INFO L82 PathProgramCache]: Analyzing trace with hash -704116591, now seen corresponding path program 1 times [2018-11-07 21:00:19,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:19,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:19,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:19,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:19,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:19,691 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:00:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 144 proven. 336 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-11-07 21:00:20,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:20,868 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:20,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 594 with the following transitions: [2018-11-07 21:00:20,868 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 21:00:20,871 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:20,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:20,930 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:22,602 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:22,602 INFO L272 AbstractInterpreter]: Visited 258 different actions 2292 times. Merged at 7 different actions 58 times. Widened at 1 different actions 4 times. Found 9 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 21:00:22,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:22,613 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:23,936 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.78% of their original sizes. [2018-11-07 21:00:23,936 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:24,373 INFO L415 sIntCurrentIteration]: We unified 592 AI predicates to 592 [2018-11-07 21:00:24,373 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:24,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:24,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 21:00:24,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:24,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 21:00:24,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 21:00:24,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-07 21:00:24,375 INFO L87 Difference]: Start difference. First operand 5321 states and 6358 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 21:00:32,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 21:00:32,689 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:00:32,694 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:00:32,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:00:32 BoogieIcfgContainer [2018-11-07 21:00:32,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:00:32,695 INFO L168 Benchmark]: Toolchain (without parser) took 219322.27 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -384.5 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:32,696 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 21:00:32,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1202.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:32,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:32,699 INFO L168 Benchmark]: Boogie Preprocessor took 178.35 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. [2018-11-07 21:00:32,699 INFO L168 Benchmark]: RCFGBuilder took 6475.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 248.5 MB). Peak memory consumption was 248.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:32,700 INFO L168 Benchmark]: TraceAbstraction took 211235.53 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 136.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:32,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1202.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.35 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 6475.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 248.5 MB). Peak memory consumption was 248.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211235.53 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 136.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (5321states) and FLOYD_HOARE automaton (currently 20 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (1212 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 183.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2673 SDtfs, 24057 SDslu, 1907 SDs, 0 SdLazy, 28946 SolverSat, 4121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.3s Time, PredicateUnifierStatistics: 14 DeclaredPredicates, 3171 GetRequests, 2875 SyntacticMatches, 121 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5321occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.2s AbstIntTime, 7 AbstIntIterations, 7 AbstIntStrong, 0.9976917733080674 AbsIntWeakeningRatio, 0.0744336569579288 AbsIntAvgWeakeningVarsNumRemoved, 13.007766990291262 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 515 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 3270 NumberOfCodeBlocks, 3270 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3261 ConstructedInterpolants, 0 QuantifiedInterpolants, 7295061 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 1713/3185 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown