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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:09:14,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:09:14,440 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:09:14,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:09:14,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:09:14,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:09:14,458 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:09:14,460 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:09:14,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:09:14,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:09:14,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:09:14,464 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:09:14,465 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:09:14,466 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:09:14,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:09:14,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:09:14,469 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:09:14,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:09:14,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:09:14,474 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:09:14,475 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:09:14,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:09:14,479 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:09:14,479 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:09:14,479 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:09:14,480 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:09:14,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:09:14,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:09:14,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:09:14,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:09:14,484 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:09:14,485 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:09:14,485 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:09:14,486 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:09:14,487 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:09:14,487 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:09:14,488 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:09:14,503 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:09:14,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:09:14,505 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:09:14,505 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:09:14,505 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:09:14,505 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:09:14,505 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:09:14,506 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:09:14,507 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:09:14,508 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:09:14,508 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:09:14,508 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:09:14,508 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:09:14,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:09:14,508 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:09:14,509 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:09:14,509 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:09:14,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:09:14,509 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:09:14,509 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:09:14,510 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:09:14,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:09:14,510 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:09:14,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:09:14,510 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:09:14,511 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:09:14,511 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:09:14,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:09:14,511 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:09:14,511 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:09:14,512 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:09:14,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:09:14,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:09:14,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:09:14,573 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:09:14,573 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:09:14,574 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-11-07 09:09:14,632 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc72e2beb/8b5fe2935ed04616903e8fbcc3ce17d9/FLAG74a39d917 [2018-11-07 09:09:15,293 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:09:15,294 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-11-07 09:09:15,315 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc72e2beb/8b5fe2935ed04616903e8fbcc3ce17d9/FLAG74a39d917 [2018-11-07 09:09:15,330 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc72e2beb/8b5fe2935ed04616903e8fbcc3ce17d9 [2018-11-07 09:09:15,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:09:15,343 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:09:15,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:09:15,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:09:15,348 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:09:15,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:09:15" (1/1) ... [2018-11-07 09:09:15,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:15, skipping insertion in model container [2018-11-07 09:09:15,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:09:15" (1/1) ... [2018-11-07 09:09:15,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:09:15,456 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:09:16,375 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:09:16,379 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:09:16,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:09:16,763 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:09:16,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16 WrapperNode [2018-11-07 09:09:16,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:09:16,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:09:16,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:09:16,765 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:09:16,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:16,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:16,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:09:16,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:09:16,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:09:16,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:09:17,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (1/1) ... [2018-11-07 09:09:17,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:09:17,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:09:17,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:09:17,167 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:09:17,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (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 09:09:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:09:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:09:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:09:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:09:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:09:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:09:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:09:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:09:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:09:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:09:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:09:23,398 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:09:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:23 BoogieIcfgContainer [2018-11-07 09:09:23,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:09:23,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:09:23,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:09:23,405 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:09:23,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:09:15" (1/3) ... [2018-11-07 09:09:23,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:23, skipping insertion in model container [2018-11-07 09:09:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:09:16" (2/3) ... [2018-11-07 09:09:23,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:23, skipping insertion in model container [2018-11-07 09:09:23,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:23" (3/3) ... [2018-11-07 09:09:23,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label35_true-unreach-call.c [2018-11-07 09:09:23,421 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:09:23,429 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:09:23,447 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:09:23,490 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:09:23,490 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:09:23,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:09:23,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:09:23,490 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:09:23,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:09:23,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:09:23,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:09:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:09:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 09:09:23,534 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:23,535 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:23,538 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:23,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash -524388215, now seen corresponding path program 1 times [2018-11-07 09:09:23,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:23,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:23,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:23,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:23,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:24,078 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 09:09:24,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:09:24,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:09:24,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:24,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:09:24,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:09:24,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:09:24,108 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:09:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:30,220 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 09:09:30,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:09:30,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-07 09:09:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:30,248 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 09:09:30,248 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 09:09:30,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:09:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 09:09:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 09:09:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 09:09:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 09:09:30,411 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 43 [2018-11-07 09:09:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:30,412 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 09:09:30,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:09:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 09:09:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 09:09:30,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:30,426 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:30,427 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:30,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1605428579, now seen corresponding path program 1 times [2018-11-07 09:09:30,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:30,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:30,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:30,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:30,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:30,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:09:30,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:09:30,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:30,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:09:30,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:09:30,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:09:30,753 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 09:09:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:35,997 INFO L93 Difference]: Finished difference Result 2759 states and 5140 transitions. [2018-11-07 09:09:35,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:09:35,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-07 09:09:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:36,017 INFO L225 Difference]: With dead ends: 2759 [2018-11-07 09:09:36,018 INFO L226 Difference]: Without dead ends: 2006 [2018-11-07 09:09:36,027 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 [2018-11-07 09:09:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2018-11-07 09:09:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2003. [2018-11-07 09:09:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2018-11-07 09:09:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3223 transitions. [2018-11-07 09:09:36,122 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3223 transitions. Word has length 113 [2018-11-07 09:09:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:36,123 INFO L480 AbstractCegarLoop]: Abstraction has 2003 states and 3223 transitions. [2018-11-07 09:09:36,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:09:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3223 transitions. [2018-11-07 09:09:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 09:09:36,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:36,140 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:36,141 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:36,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1328217001, now seen corresponding path program 1 times [2018-11-07 09:09:36,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:36,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:36,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:36,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:36,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:36,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:09:36,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:09:36,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:36,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:09:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:09:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:09:36,554 INFO L87 Difference]: Start difference. First operand 2003 states and 3223 transitions. Second operand 5 states. [2018-11-07 09:09:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:41,971 INFO L93 Difference]: Finished difference Result 6012 states and 9860 transitions. [2018-11-07 09:09:41,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:09:41,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 09:09:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:42,009 INFO L225 Difference]: With dead ends: 6012 [2018-11-07 09:09:42,009 INFO L226 Difference]: Without dead ends: 4015 [2018-11-07 09:09:42,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:09:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2018-11-07 09:09:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3959. [2018-11-07 09:09:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3959 states. [2018-11-07 09:09:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5702 transitions. [2018-11-07 09:09:42,159 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5702 transitions. Word has length 130 [2018-11-07 09:09:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:42,160 INFO L480 AbstractCegarLoop]: Abstraction has 3959 states and 5702 transitions. [2018-11-07 09:09:42,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:09:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5702 transitions. [2018-11-07 09:09:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-07 09:09:42,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:42,171 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:42,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:42,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1256486234, now seen corresponding path program 1 times [2018-11-07 09:09:42,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:42,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:42,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 09:09:42,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:42,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:42,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-07 09:09:42,756 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:42,817 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:42,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:43,775 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:09:43,778 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:09:43,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:43,811 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:09:45,066 INFO L227 lantSequenceWeakener]: Weakened 400 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 09:09:45,066 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:09:45,490 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-07 09:09:45,490 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:09:45,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:09:45,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:09:45,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:09:45,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:09:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:09:45,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:09:45,497 INFO L87 Difference]: Start difference. First operand 3959 states and 5702 transitions. Second operand 6 states. [2018-11-07 09:10:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:43,966 INFO L93 Difference]: Finished difference Result 8222 states and 11736 transitions. [2018-11-07 09:10:43,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:10:43,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 412 [2018-11-07 09:10:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:43,988 INFO L225 Difference]: With dead ends: 8222 [2018-11-07 09:10:43,988 INFO L226 Difference]: Without dead ends: 4269 [2018-11-07 09:10:44,005 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 412 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:10:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2018-11-07 09:10:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4267. [2018-11-07 09:10:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2018-11-07 09:10:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6019 transitions. [2018-11-07 09:10:44,113 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6019 transitions. Word has length 412 [2018-11-07 09:10:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:44,114 INFO L480 AbstractCegarLoop]: Abstraction has 4267 states and 6019 transitions. [2018-11-07 09:10:44,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:10:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6019 transitions. [2018-11-07 09:10:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-11-07 09:10:44,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:44,128 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:44,129 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:44,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:44,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1332166065, now seen corresponding path program 1 times [2018-11-07 09:10:44,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:44,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:44,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:44,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 189 proven. 86 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 09:10:44,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:44,974 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:44,974 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 487 with the following transitions: [2018-11-07 09:10:44,975 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:44,991 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:44,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:10:45,737 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:10:45,737 INFO L272 AbstractInterpreter]: Visited 285 different actions 854 times. Merged at 8 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:10:45,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:45,780 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:10:45,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:45,781 INFO L194 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 [2018-11-07 09:10:45,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:45,797 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:10:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:45,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:10:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 09:10:46,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:10:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 09:10:47,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:10:47,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 09:10:47,490 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:10:47,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 09:10:47,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 09:10:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:10:47,492 INFO L87 Difference]: Start difference. First operand 4267 states and 6019 transitions. Second operand 11 states. [2018-11-07 09:10:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:57,852 INFO L93 Difference]: Finished difference Result 10826 states and 15517 transitions. [2018-11-07 09:10:57,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:10:57,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 486 [2018-11-07 09:10:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:57,892 INFO L225 Difference]: With dead ends: 10826 [2018-11-07 09:10:57,892 INFO L226 Difference]: Without dead ends: 6873 [2018-11-07 09:10:57,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 981 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-11-07 09:10:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2018-11-07 09:10:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 6838. [2018-11-07 09:10:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6838 states. [2018-11-07 09:10:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 8137 transitions. [2018-11-07 09:10:58,122 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 8137 transitions. Word has length 486 [2018-11-07 09:10:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:58,123 INFO L480 AbstractCegarLoop]: Abstraction has 6838 states and 8137 transitions. [2018-11-07 09:10:58,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 09:10:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 8137 transitions. [2018-11-07 09:10:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-07 09:10:58,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:58,144 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:58,144 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:58,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1918811840, now seen corresponding path program 1 times [2018-11-07 09:10:58,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:58,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:58,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:58,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:58,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 236 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:10:58,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:58,702 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:58,702 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-11-07 09:10:58,703 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:58,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:58,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:00,323 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:00,324 INFO L272 AbstractInterpreter]: Visited 287 different actions 1425 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:11:00,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:00,364 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:00,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:00,364 INFO L194 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 [2018-11-07 09:11:00,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:00,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:00,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-07 09:11:01,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 236 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:11:02,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:11:02,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:11:02,298 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:11:02,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:11:02,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:11:02,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:11:02,303 INFO L87 Difference]: Start difference. First operand 6838 states and 8137 transitions. Second operand 9 states. [2018-11-07 09:11:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:10,149 INFO L93 Difference]: Finished difference Result 18351 states and 22476 transitions. [2018-11-07 09:11:10,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:11:10,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 532 [2018-11-07 09:11:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:10,210 INFO L225 Difference]: With dead ends: 18351 [2018-11-07 09:11:10,211 INFO L226 Difference]: Without dead ends: 11827 [2018-11-07 09:11:10,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1072 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-11-07 09:11:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11827 states. [2018-11-07 09:11:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11827 to 10828. [2018-11-07 09:11:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10828 states. [2018-11-07 09:11:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 12838 transitions. [2018-11-07 09:11:10,528 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 12838 transitions. Word has length 532 [2018-11-07 09:11:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:10,531 INFO L480 AbstractCegarLoop]: Abstraction has 10828 states and 12838 transitions. [2018-11-07 09:11:10,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:11:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 12838 transitions. [2018-11-07 09:11:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-11-07 09:11:10,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:10,563 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:10,563 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:10,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash -449753279, now seen corresponding path program 1 times [2018-11-07 09:11:10,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:10,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:10,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:10,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2018-11-07 09:11:11,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:11:11,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:11:11,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:11:11,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:11:11,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:11:11,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:11:11,393 INFO L87 Difference]: Start difference. First operand 10828 states and 12838 transitions. Second operand 3 states. [2018-11-07 09:11:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:14,798 INFO L93 Difference]: Finished difference Result 31386 states and 38165 transitions. [2018-11-07 09:11:14,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:11:14,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 554 [2018-11-07 09:11:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:14,870 INFO L225 Difference]: With dead ends: 31386 [2018-11-07 09:11:14,870 INFO L226 Difference]: Without dead ends: 15936 [2018-11-07 09:11:14,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:11:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15936 states. [2018-11-07 09:11:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15936 to 15643. [2018-11-07 09:11:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15643 states. [2018-11-07 09:11:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15643 states to 15643 states and 17782 transitions. [2018-11-07 09:11:15,232 INFO L78 Accepts]: Start accepts. Automaton has 15643 states and 17782 transitions. Word has length 554 [2018-11-07 09:11:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:15,232 INFO L480 AbstractCegarLoop]: Abstraction has 15643 states and 17782 transitions. [2018-11-07 09:11:15,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:11:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15643 states and 17782 transitions. [2018-11-07 09:11:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-11-07 09:11:15,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:15,285 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:15,285 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:15,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:15,285 INFO L82 PathProgramCache]: Analyzing trace with hash 246757196, now seen corresponding path program 1 times [2018-11-07 09:11:15,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:15,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:15,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:15,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:15,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 380 proven. 105 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-11-07 09:11:16,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:16,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:16,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 650 with the following transitions: [2018-11-07 09:11:16,302 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [762], [763], [766], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:16,308 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:16,308 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:20,896 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:20,896 INFO L272 AbstractInterpreter]: Visited 286 different actions 859 times. Merged at 9 different actions 25 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:11:20,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:20,932 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:20,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:20,932 INFO L194 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 [2018-11-07 09:11:20,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:20,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:21,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 651 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-11-07 09:11:21,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 380 proven. 105 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-11-07 09:11:21,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:11:21,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:11:21,919 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:11:21,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:11:21,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:11:21,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:11:21,921 INFO L87 Difference]: Start difference. First operand 15643 states and 17782 transitions. Second operand 9 states. [2018-11-07 09:11:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:30,437 INFO L93 Difference]: Finished difference Result 34633 states and 39695 transitions. [2018-11-07 09:11:30,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:11:30,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 649 [2018-11-07 09:11:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:30,507 INFO L225 Difference]: With dead ends: 34633 [2018-11-07 09:11:30,507 INFO L226 Difference]: Without dead ends: 19304 [2018-11-07 09:11:30,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1305 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-07 09:11:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19304 states. [2018-11-07 09:11:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19304 to 19030. [2018-11-07 09:11:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19030 states. [2018-11-07 09:11:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19030 states to 19030 states and 21309 transitions. [2018-11-07 09:11:30,916 INFO L78 Accepts]: Start accepts. Automaton has 19030 states and 21309 transitions. Word has length 649 [2018-11-07 09:11:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:30,917 INFO L480 AbstractCegarLoop]: Abstraction has 19030 states and 21309 transitions. [2018-11-07 09:11:30,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:11:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 19030 states and 21309 transitions. [2018-11-07 09:11:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-11-07 09:11:30,972 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:30,973 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:30,973 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:30,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash -570184843, now seen corresponding path program 1 times [2018-11-07 09:11:30,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:30,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:30,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:30,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:30,975 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 491 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 09:11:31,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:31,912 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:31,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 664 with the following transitions: [2018-11-07 09:11:31,913 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1021], [1024], [1028], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:31,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:31,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:37,195 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:37,196 INFO L272 AbstractInterpreter]: Visited 288 different actions 1138 times. Merged at 9 different actions 27 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:11:37,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:37,224 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:37,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:37,224 INFO L194 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 [2018-11-07 09:11:37,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:37,238 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:37,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-11-07 09:11:37,712 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-11-07 09:11:37,986 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:11:37,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-11-07 09:11:37,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:11:37,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:11:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:11:37,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:11:37,988 INFO L87 Difference]: Start difference. First operand 19030 states and 21309 transitions. Second operand 3 states. [2018-11-07 09:11:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:40,228 INFO L93 Difference]: Finished difference Result 47404 states and 53919 transitions. [2018-11-07 09:11:40,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:11:40,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 663 [2018-11-07 09:11:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:40,333 INFO L225 Difference]: With dead ends: 47404 [2018-11-07 09:11:40,334 INFO L226 Difference]: Without dead ends: 28688 [2018-11-07 09:11:40,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:11:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28688 states. [2018-11-07 09:11:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28688 to 28666. [2018-11-07 09:11:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28666 states. [2018-11-07 09:11:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28666 states to 28666 states and 32051 transitions. [2018-11-07 09:11:40,991 INFO L78 Accepts]: Start accepts. Automaton has 28666 states and 32051 transitions. Word has length 663 [2018-11-07 09:11:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:40,992 INFO L480 AbstractCegarLoop]: Abstraction has 28666 states and 32051 transitions. [2018-11-07 09:11:40,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:11:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 28666 states and 32051 transitions. [2018-11-07 09:11:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-11-07 09:11:41,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:41,041 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:41,041 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:41,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:41,042 INFO L82 PathProgramCache]: Analyzing trace with hash -369582495, now seen corresponding path program 1 times [2018-11-07 09:11:41,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:41,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:41,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:41,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:41,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2018-11-07 09:11:41,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:41,764 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:41,765 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 666 with the following transitions: [2018-11-07 09:11:41,765 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:41,772 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:41,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:47,297 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:47,297 INFO L272 AbstractInterpreter]: Visited 288 different actions 861 times. Merged at 9 different actions 25 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:11:47,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:47,335 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:47,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:47,336 INFO L194 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 [2018-11-07 09:11:47,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:47,349 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:47,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-11-07 09:11:47,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2018-11-07 09:11:48,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:11:48,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-11-07 09:11:48,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:11:48,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:11:48,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:11:48,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:11:48,116 INFO L87 Difference]: Start difference. First operand 28666 states and 32051 transitions. Second operand 3 states. [2018-11-07 09:11:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:11:50,340 INFO L93 Difference]: Finished difference Result 57262 states and 64106 transitions. [2018-11-07 09:11:50,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:11:50,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 665 [2018-11-07 09:11:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:11:50,420 INFO L225 Difference]: With dead ends: 57262 [2018-11-07 09:11:50,420 INFO L226 Difference]: Without dead ends: 28968 [2018-11-07 09:11:50,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1332 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:11:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28968 states. [2018-11-07 09:11:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28968 to 28660. [2018-11-07 09:11:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28660 states. [2018-11-07 09:11:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28660 states to 28660 states and 32031 transitions. [2018-11-07 09:11:50,951 INFO L78 Accepts]: Start accepts. Automaton has 28660 states and 32031 transitions. Word has length 665 [2018-11-07 09:11:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:11:50,952 INFO L480 AbstractCegarLoop]: Abstraction has 28660 states and 32031 transitions. [2018-11-07 09:11:50,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:11:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28660 states and 32031 transitions. [2018-11-07 09:11:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2018-11-07 09:11:50,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:11:50,991 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:50,992 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:11:50,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash 529605645, now seen corresponding path program 1 times [2018-11-07 09:11:50,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:11:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:50,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:11:50,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:11:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-11-07 09:11:51,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:51,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:11:51,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 706 with the following transitions: [2018-11-07 09:11:51,752 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:11:51,757 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:11:51,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:11:55,999 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:11:55,999 INFO L272 AbstractInterpreter]: Visited 286 different actions 862 times. Merged at 9 different actions 28 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:11:56,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:11:56,009 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:11:56,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:11:56,009 INFO L194 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 [2018-11-07 09:11:56,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:11:56,023 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:11:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:11:56,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:11:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-11-07 09:11:56,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:11:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-11-07 09:11:57,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:11:57,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:11:57,851 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:11:57,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 09:11:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 09:11:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:11:57,853 INFO L87 Difference]: Start difference. First operand 28660 states and 32031 transitions. Second operand 8 states. [2018-11-07 09:12:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:12:01,822 INFO L93 Difference]: Finished difference Result 67262 states and 76795 transitions. [2018-11-07 09:12:01,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:12:01,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 705 [2018-11-07 09:12:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:12:01,918 INFO L225 Difference]: With dead ends: 67262 [2018-11-07 09:12:01,918 INFO L226 Difference]: Without dead ends: 29851 [2018-11-07 09:12:01,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1409 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:12:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29851 states. [2018-11-07 09:12:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29851 to 27878. [2018-11-07 09:12:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27878 states. [2018-11-07 09:12:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27878 states to 27878 states and 30502 transitions. [2018-11-07 09:12:02,466 INFO L78 Accepts]: Start accepts. Automaton has 27878 states and 30502 transitions. Word has length 705 [2018-11-07 09:12:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:12:02,467 INFO L480 AbstractCegarLoop]: Abstraction has 27878 states and 30502 transitions. [2018-11-07 09:12:02,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 09:12:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 27878 states and 30502 transitions. [2018-11-07 09:12:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2018-11-07 09:12:02,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:12:02,497 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:02,497 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:12:02,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1772960059, now seen corresponding path program 1 times [2018-11-07 09:12:02,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:12:02,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:02,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:12:02,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:02,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:12:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:12:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 725 proven. 68 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-11-07 09:12:03,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:12:03,352 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:12:03,352 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 742 with the following transitions: [2018-11-07 09:12:03,353 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [762], [763], [766], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:12:03,357 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:12:03,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:12:07,308 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:12:07,308 INFO L272 AbstractInterpreter]: Visited 289 different actions 864 times. Merged at 9 different actions 25 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:12:07,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:07,319 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:12:07,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:12:07,319 INFO L194 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 [2018-11-07 09:12:07,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:12:07,329 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:12:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:12:07,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:12:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2018-11-07 09:12:07,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:12:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2018-11-07 09:12:08,295 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:12:08,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-11-07 09:12:08,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:12:08,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:12:08,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:12:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:12:08,297 INFO L87 Difference]: Start difference. First operand 27878 states and 30502 transitions. Second operand 3 states. [2018-11-07 09:12:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:12:10,578 INFO L93 Difference]: Finished difference Result 60627 states and 66937 transitions. [2018-11-07 09:12:10,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:12:10,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 741 [2018-11-07 09:12:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:12:10,650 INFO L225 Difference]: With dead ends: 60627 [2018-11-07 09:12:10,651 INFO L226 Difference]: Without dead ends: 33121 [2018-11-07 09:12:10,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1484 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:12:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33121 states. [2018-11-07 09:12:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33121 to 31269. [2018-11-07 09:12:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31269 states. [2018-11-07 09:12:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31269 states to 31269 states and 34460 transitions. [2018-11-07 09:12:11,129 INFO L78 Accepts]: Start accepts. Automaton has 31269 states and 34460 transitions. Word has length 741 [2018-11-07 09:12:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:12:11,129 INFO L480 AbstractCegarLoop]: Abstraction has 31269 states and 34460 transitions. [2018-11-07 09:12:11,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:12:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31269 states and 34460 transitions. [2018-11-07 09:12:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2018-11-07 09:12:11,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:12:11,185 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 09:12:11,186 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:12:11,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:11,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1401930720, now seen corresponding path program 1 times [2018-11-07 09:12:11,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:12:11,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:11,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:12:11,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:11,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:12:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:12:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 565 proven. 215 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2018-11-07 09:12:12,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:12:12,417 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:12:12,417 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 935 with the following transitions: [2018-11-07 09:12:12,418 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [762], [763], [766], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1163], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:12:12,422 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:12:12,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:12:16,297 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:12:16,297 INFO L272 AbstractInterpreter]: Visited 290 different actions 867 times. Merged at 10 different actions 25 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:12:16,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:16,334 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:12:16,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:12:16,335 INFO L194 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 [2018-11-07 09:12:16,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:12:16,343 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:12:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:12:16,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:12:16,990 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 411 DAG size of output: 28 [2018-11-07 09:12:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 808 proven. 34 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2018-11-07 09:12:18,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:12:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 834 proven. 8 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2018-11-07 09:12:19,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:12:19,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2018-11-07 09:12:19,199 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:12:19,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:12:19,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:12:19,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:12:19,201 INFO L87 Difference]: Start difference. First operand 31269 states and 34460 transitions. Second operand 10 states. [2018-11-07 09:12:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:12:43,717 INFO L93 Difference]: Finished difference Result 116821 states and 129108 transitions. [2018-11-07 09:12:43,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-07 09:12:43,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 934 [2018-11-07 09:12:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:12:43,720 INFO L225 Difference]: With dead ends: 116821 [2018-11-07 09:12:43,720 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 09:12:43,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1944 GetRequests, 1894 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=577, Invalid=2075, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 09:12:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 09:12:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 09:12:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 09:12:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 09:12:43,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 934 [2018-11-07 09:12:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:12:43,871 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 09:12:43,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:12:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 09:12:43,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 09:12:43,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 09:12:44,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:44,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:44,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:44,146 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:44,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:44,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,173 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,237 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,475 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,524 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,886 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:45,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,157 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,268 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,281 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,283 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 544 DAG size of output: 291 [2018-11-07 09:12:46,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,485 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,610 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,624 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,679 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,734 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,785 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,893 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:46,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,268 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,370 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 541 DAG size of output: 293 [2018-11-07 09:12:47,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:47,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-07 09:12:48,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-11-07 09:12:48,101 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-07 09:12:48,102 INFO L168 Benchmark]: Toolchain (without parser) took 212760.63 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,104 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 09:12:48,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1420.23 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 230.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,106 INFO L168 Benchmark]: Boogie Preprocessor took 170.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,106 INFO L168 Benchmark]: RCFGBuilder took 6232.90 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: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,107 INFO L168 Benchmark]: TraceAbstraction took 204701.41 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:12:48,112 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 1420.23 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 230.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6232.90 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: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204701.41 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 38. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown