java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:14:44,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:14:44,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:14:44,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:14:44,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:14:44,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:14:44,706 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:14:44,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:14:44,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:14:44,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:14:44,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:14:44,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:14:44,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:14:44,713 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:14:44,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:14:44,715 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:14:44,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:14:44,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:14:44,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:14:44,722 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:14:44,723 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:14:44,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:14:44,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:14:44,727 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:14:44,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:14:44,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:14:44,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:14:44,730 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:14:44,731 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:14:44,732 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:14:44,733 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:14:44,733 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:14:44,733 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:14:44,734 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:14:44,735 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:14:44,735 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:14:44,736 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:14:44,752 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:14:44,752 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:14:44,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:14:44,754 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:14:44,754 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:14:44,754 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:14:44,754 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:14:44,755 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:14:44,755 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:14:44,755 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:14:44,755 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:14:44,755 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:14:44,756 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:14:44,756 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:14:44,757 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:14:44,757 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:14:44,757 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:14:44,758 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:14:44,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:14:44,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:14:44,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:14:44,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:14:44,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:14:44,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:14:44,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:14:44,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:14:44,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:14:44,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:14:44,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:14:44,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:14:44,762 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:14:44,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:14:44,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:14:44,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:14:44,764 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:14:44,764 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:14:44,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:14:44,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:14:44,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:14:44,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:14:44,845 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:14:44,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-10-27 08:14:44,912 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44bd8587d/ce47697768504a2c8f7b627e003773f7/FLAG56117f087 [2018-10-27 08:14:45,574 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:14:45,575 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-10-27 08:14:45,594 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44bd8587d/ce47697768504a2c8f7b627e003773f7/FLAG56117f087 [2018-10-27 08:14:45,610 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44bd8587d/ce47697768504a2c8f7b627e003773f7 [2018-10-27 08:14:45,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:14:45,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:14:45,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:14:45,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:14:45,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:14:45,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:14:45" (1/1) ... [2018-10-27 08:14:45,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:45, skipping insertion in model container [2018-10-27 08:14:45,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:14:45" (1/1) ... [2018-10-27 08:14:45,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:14:45,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:14:46,521 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:14:46,525 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:14:46,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:14:46,862 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:14:46,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46 WrapperNode [2018-10-27 08:14:46,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:14:46,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:14:46,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:14:46,864 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:14:46,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:46,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:14:47,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:14:47,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:14:47,265 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:14:47,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... [2018-10-27 08:14:47,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:14:47,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:14:47,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:14:47,510 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:14:47,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:14:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:14:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:14:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:14:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:14:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:14:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:14:47,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:14:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:14:47,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:14:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:14:53,933 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:14:53,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:14:53 BoogieIcfgContainer [2018-10-27 08:14:53,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:14:53,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:14:53,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:14:53,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:14:53,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:14:45" (1/3) ... [2018-10-27 08:14:53,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6c5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:14:53, skipping insertion in model container [2018-10-27 08:14:53,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:14:46" (2/3) ... [2018-10-27 08:14:53,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6c5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:14:53, skipping insertion in model container [2018-10-27 08:14:53,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:14:53" (3/3) ... [2018-10-27 08:14:53,946 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label43_true-unreach-call.c [2018-10-27 08:14:53,954 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:14:53,963 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:14:53,980 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:14:54,021 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:14:54,022 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:14:54,022 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:14:54,022 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:14:54,022 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:14:54,022 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:14:54,023 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:14:54,023 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:14:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:14:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 08:14:54,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:54,068 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:14:54,070 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:54,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash 907062017, now seen corresponding path program 1 times [2018-10-27 08:14:54,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:54,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:54,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:54,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:54,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:54,635 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 08:14:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:14:54,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:14:54,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:14:54,671 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:54,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:14:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:14:54,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:14:54,697 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:15:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:02,919 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 08:15:02,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:15:02,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-27 08:15:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:02,956 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 08:15:02,956 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 08:15:02,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:15:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 08:15:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-27 08:15:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-27 08:15:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-27 08:15:03,087 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 65 [2018-10-27 08:15:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:03,089 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-27 08:15:03,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:15:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-27 08:15:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 08:15:03,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:03,098 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:15:03,099 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:03,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1501715637, now seen corresponding path program 1 times [2018-10-27 08:15:03,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:03,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:03,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:03,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:03,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:15:03,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:15:03,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:15:03,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:15:03,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:15:03,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:15:03,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:15:03,453 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-10-27 08:15:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:11,887 INFO L93 Difference]: Finished difference Result 2760 states and 5146 transitions. [2018-10-27 08:15:11,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:15:11,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-10-27 08:15:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:11,907 INFO L225 Difference]: With dead ends: 2760 [2018-10-27 08:15:11,908 INFO L226 Difference]: Without dead ends: 2007 [2018-10-27 08:15:11,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:15:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2018-10-27 08:15:12,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2002. [2018-10-27 08:15:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2018-10-27 08:15:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3249 transitions. [2018-10-27 08:15:12,020 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3249 transitions. Word has length 135 [2018-10-27 08:15:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:12,021 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 3249 transitions. [2018-10-27 08:15:12,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:15:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3249 transitions. [2018-10-27 08:15:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 08:15:12,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:12,036 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:15:12,036 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:12,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1679120985, now seen corresponding path program 1 times [2018-10-27 08:15:12,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:12,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:12,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:12,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:12,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:15:12,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:15:12,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:15:12,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:15:12,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:15:12,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:15:12,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:15:12,340 INFO L87 Difference]: Start difference. First operand 2002 states and 3249 transitions. Second operand 5 states. [2018-10-27 08:15:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:28,410 INFO L93 Difference]: Finished difference Result 6847 states and 11343 transitions. [2018-10-27 08:15:28,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:15:28,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-10-27 08:15:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:28,447 INFO L225 Difference]: With dead ends: 6847 [2018-10-27 08:15:28,447 INFO L226 Difference]: Without dead ends: 4851 [2018-10-27 08:15:28,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:15:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2018-10-27 08:15:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4806. [2018-10-27 08:15:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2018-10-27 08:15:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7198 transitions. [2018-10-27 08:15:28,654 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7198 transitions. Word has length 216 [2018-10-27 08:15:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:28,655 INFO L481 AbstractCegarLoop]: Abstraction has 4806 states and 7198 transitions. [2018-10-27 08:15:28,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:15:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7198 transitions. [2018-10-27 08:15:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 08:15:28,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:28,668 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:15:28,668 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:28,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1565078656, now seen corresponding path program 1 times [2018-10-27 08:15:28,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:28,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:28,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:28,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:28,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 116 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:15:29,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:29,283 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:15:29,284 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-27 08:15:29,287 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], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:15:29,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:15:29,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:15:30,001 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:15:30,002 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:15:30,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:30,045 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:15:30,597 INFO L227 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 78.23% of their original sizes. [2018-10-27 08:15:30,597 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:15:30,862 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-10-27 08:15:30,862 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:15:30,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:15:30,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:15:30,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:15:30,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:15:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:15:30,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:15:30,865 INFO L87 Difference]: Start difference. First operand 4806 states and 7198 transitions. Second operand 6 states. [2018-10-27 08:16:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:16,091 INFO L93 Difference]: Finished difference Result 9916 states and 14756 transitions. [2018-10-27 08:16:16,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:16:16,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2018-10-27 08:16:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:16,119 INFO L225 Difference]: With dead ends: 9916 [2018-10-27 08:16:16,119 INFO L226 Difference]: Without dead ends: 5116 [2018-10-27 08:16:16,142 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:16:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2018-10-27 08:16:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2018-10-27 08:16:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5114 states. [2018-10-27 08:16:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7515 transitions. [2018-10-27 08:16:16,263 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7515 transitions. Word has length 240 [2018-10-27 08:16:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:16,264 INFO L481 AbstractCegarLoop]: Abstraction has 5114 states and 7515 transitions. [2018-10-27 08:16:16,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:16:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7515 transitions. [2018-10-27 08:16:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-27 08:16:16,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:16,281 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:16:16,281 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:16,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1531914166, now seen corresponding path program 1 times [2018-10-27 08:16:16,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:16,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:16,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:16,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:16,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 180 proven. 242 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-27 08:16:16,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:16:16,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:16:16,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-27 08:16:16,760 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], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:16:16,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:16:16,765 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:16:17,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:16:17,054 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:16:17,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:17,059 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:16:17,417 INFO L227 lantSequenceWeakener]: Weakened 333 states. On average, predicates are now at 84.08% of their original sizes. [2018-10-27 08:16:17,418 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:16:17,611 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-10-27 08:16:17,611 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:16:17,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:16:17,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:16:17,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:16:17,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:16:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:16:17,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:16:17,613 INFO L87 Difference]: Start difference. First operand 5114 states and 7515 transitions. Second operand 9 states. [2018-10-27 08:17:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:17:29,302 INFO L93 Difference]: Finished difference Result 10542 states and 15451 transitions. [2018-10-27 08:17:29,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:17:29,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 336 [2018-10-27 08:17:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:17:29,333 INFO L225 Difference]: With dead ends: 10542 [2018-10-27 08:17:29,333 INFO L226 Difference]: Without dead ends: 5742 [2018-10-27 08:17:29,360 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 341 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:17:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2018-10-27 08:17:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5739. [2018-10-27 08:17:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5739 states. [2018-10-27 08:17:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 8182 transitions. [2018-10-27 08:17:29,499 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 8182 transitions. Word has length 336 [2018-10-27 08:17:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:17:29,500 INFO L481 AbstractCegarLoop]: Abstraction has 5739 states and 8182 transitions. [2018-10-27 08:17:29,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:17:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 8182 transitions. [2018-10-27 08:17:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-27 08:17:29,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:17:29,508 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:17:29,508 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:17:29,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash 25892372, now seen corresponding path program 1 times [2018-10-27 08:17:29,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:17:29,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:29,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:17:29,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:29,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:17:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:17:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 08:17:30,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:17:30,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:17:30,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-10-27 08:17:30,094 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], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [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], [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] [2018-10-27 08:17:30,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:17:30,108 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:17:30,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:17:30,917 INFO L272 AbstractInterpreter]: Visited 282 different actions 833 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:17:30,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:30,956 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:17:31,234 INFO L227 lantSequenceWeakener]: Weakened 337 states. On average, predicates are now at 80.61% of their original sizes. [2018-10-27 08:17:31,235 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:17:31,355 INFO L415 sIntCurrentIteration]: We unified 339 AI predicates to 339 [2018-10-27 08:17:31,355 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:17:31,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:17:31,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-27 08:17:31,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:17:31,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:17:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:17:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:17:31,357 INFO L87 Difference]: Start difference. First operand 5739 states and 8182 transitions. Second operand 10 states. [2018-10-27 08:18:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:47,140 INFO L93 Difference]: Finished difference Result 12099 states and 17988 transitions. [2018-10-27 08:18:47,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:18:47,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2018-10-27 08:18:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:47,170 INFO L225 Difference]: With dead ends: 12099 [2018-10-27 08:18:47,171 INFO L226 Difference]: Without dead ends: 7299 [2018-10-27 08:18:47,189 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 348 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:18:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2018-10-27 08:18:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 6982. [2018-10-27 08:18:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6982 states. [2018-10-27 08:18:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 9581 transitions. [2018-10-27 08:18:47,352 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 9581 transitions. Word has length 340 [2018-10-27 08:18:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:47,353 INFO L481 AbstractCegarLoop]: Abstraction has 6982 states and 9581 transitions. [2018-10-27 08:18:47,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:18:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 9581 transitions. [2018-10-27 08:18:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-10-27 08:18:47,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:47,367 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:47,367 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:47,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1653682978, now seen corresponding path program 1 times [2018-10-27 08:18:47,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:47,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:47,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:47,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:47,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:18:47,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:47,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:18:47,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:47,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:18:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:18:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:18:47,784 INFO L87 Difference]: Start difference. First operand 6982 states and 9581 transitions. Second operand 3 states. [2018-10-27 08:18:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:51,875 INFO L93 Difference]: Finished difference Result 14579 states and 20863 transitions. [2018-10-27 08:18:51,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:18:51,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 436 [2018-10-27 08:18:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:51,907 INFO L225 Difference]: With dead ends: 14579 [2018-10-27 08:18:51,907 INFO L226 Difference]: Without dead ends: 9154 [2018-10-27 08:18:51,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:18:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9154 states. [2018-10-27 08:18:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9154 to 8844. [2018-10-27 08:18:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8844 states. [2018-10-27 08:18:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8844 states to 8844 states and 11701 transitions. [2018-10-27 08:18:52,106 INFO L78 Accepts]: Start accepts. Automaton has 8844 states and 11701 transitions. Word has length 436 [2018-10-27 08:18:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:52,107 INFO L481 AbstractCegarLoop]: Abstraction has 8844 states and 11701 transitions. [2018-10-27 08:18:52,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:18:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8844 states and 11701 transitions. [2018-10-27 08:18:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2018-10-27 08:18:52,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:52,127 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:52,128 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:52,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash -460164094, now seen corresponding path program 1 times [2018-10-27 08:18:52,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:52,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:52,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:52,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:52,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-27 08:18:52,712 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:18:52,717 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:18:52,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:18:52 BoogieIcfgContainer [2018-10-27 08:18:52,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:18:52,719 INFO L168 Benchmark]: Toolchain (without parser) took 247097.03 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -926.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,720 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:18:52,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1239.25 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 400.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,722 INFO L168 Benchmark]: Boogie Preprocessor took 243.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,723 INFO L168 Benchmark]: RCFGBuilder took 6425.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 323.3 MB). Peak memory consumption was 323.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,724 INFO L168 Benchmark]: TraceAbstraction took 238783.10 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -504.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 08:18:52,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1239.25 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 400.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 243.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6425.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 323.3 MB). Peak memory consumption was 323.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238783.10 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -504.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was analyzing trace of length 480 with TraceHistMax 3,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 238.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 229.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2298 SDtfs, 6993 SDslu, 1705 SDs, 0 SdLazy, 10945 SolverSat, 2551 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 185.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 954 GetRequests, 907 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8844occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9976146100666115 AbsIntWeakeningRatio, 0.08543263964950712 AbsIntAvgWeakeningVarsNumRemoved, 15.547645125958379 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 1037 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1768 NumberOfCodeBlocks, 1768 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1761 ConstructedInterpolants, 0 QuantifiedInterpolants, 1462219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 644/1019 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown