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/Problem14_label13_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:26:33,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:26:33,704 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:26:33,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:26:33,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:26:33,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:26:33,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:26:33,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:26:33,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:26:33,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:26:33,728 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:26:33,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:26:33,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:26:33,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:26:33,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:26:33,733 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:26:33,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:26:33,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:26:33,738 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:26:33,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:26:33,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:26:33,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:26:33,747 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:26:33,747 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:26:33,747 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:26:33,748 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:26:33,751 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:26:33,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:26:33,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:26:33,759 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:26:33,759 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:26:33,760 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:26:33,760 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:26:33,760 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:26:33,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:26:33,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:26:33,763 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 05:26:33,792 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:26:33,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:26:33,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:26:33,793 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:26:33,793 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:26:33,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:26:33,794 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:26:33,794 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:26:33,794 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:26:33,795 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:26:33,795 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:26:33,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:26:33,795 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:26:33,795 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:26:33,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:26:33,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:26:33,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:26:33,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:26:33,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:26:33,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:26:33,797 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:26:33,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:26:33,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:26:33,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:26:33,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:26:33,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:26:33,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:26:33,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:26:33,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:26:33,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:26:33,801 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:26:33,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:26:33,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:26:33,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:26:33,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:26:33,802 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:26:33,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:26:33,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:26:33,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:26:33,880 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:26:33,880 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:26:33,881 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-10-27 05:26:33,945 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da5200752/1a53ffc68673406ba6356a86e0775f7f/FLAGa9319b6e7 [2018-10-27 05:26:34,556 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:26:34,557 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-10-27 05:26:34,579 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da5200752/1a53ffc68673406ba6356a86e0775f7f/FLAGa9319b6e7 [2018-10-27 05:26:34,603 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da5200752/1a53ffc68673406ba6356a86e0775f7f [2018-10-27 05:26:34,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:26:34,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:26:34,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:26:34,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:26:34,628 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:26:34,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:26:34" (1/1) ... [2018-10-27 05:26:34,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f77a5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:34, skipping insertion in model container [2018-10-27 05:26:34,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:26:34" (1/1) ... [2018-10-27 05:26:34,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:26:34,726 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:26:35,252 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:26:35,257 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:26:35,407 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:26:35,433 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:26:35,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35 WrapperNode [2018-10-27 05:26:35,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:26:35,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:26:35,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:26:35,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:26:35,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:26:35,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:26:35,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:26:35,693 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:26:35,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (1/1) ... [2018-10-27 05:26:35,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:26:35,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:26:35,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:26:35,836 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:26:35,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (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 05:26:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:26:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:26:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:26:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:26:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:26:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:26:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:26:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:26:39,548 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:26:39,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:26:39 BoogieIcfgContainer [2018-10-27 05:26:39,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:26:39,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:26:39,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:26:39,554 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:26:39,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:26:34" (1/3) ... [2018-10-27 05:26:39,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:26:39, skipping insertion in model container [2018-10-27 05:26:39,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:26:35" (2/3) ... [2018-10-27 05:26:39,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:26:39, skipping insertion in model container [2018-10-27 05:26:39,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:26:39" (3/3) ... [2018-10-27 05:26:39,558 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label13_false-unreach-call_false-termination.c [2018-10-27 05:26:39,566 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:26:39,576 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:26:39,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:26:39,634 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:26:39,635 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:26:39,635 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:26:39,635 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:26:39,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:26:39,636 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:26:39,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:26:39,636 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:26:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:26:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-27 05:26:39,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:39,672 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] [2018-10-27 05:26:39,675 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:39,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1859951889, now seen corresponding path program 1 times [2018-10-27 05:26:39,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:39,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:39,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:39,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:39,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:40,117 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 05:26:40,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:26:40,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:26:40,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:40,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:26:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:26:40,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:26:40,150 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:26:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:41,746 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:26:41,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:26:41,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-27 05:26:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:41,772 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:26:41,773 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:26:41,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:26:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:26:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:26:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:26:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 05:26:41,872 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 31 [2018-10-27 05:26:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:41,873 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 05:26:41,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:26:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 05:26:41,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-27 05:26:41,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:41,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:41,880 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:41,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:41,881 INFO L82 PathProgramCache]: Analyzing trace with hash -984490100, now seen corresponding path program 1 times [2018-10-27 05:26:41,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:41,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:41,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:41,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:41,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:26:42,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:26:42,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:26:42,263 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:42,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:26:42,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:26:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:26:42,266 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 05:26:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:45,792 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-27 05:26:45,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:26:45,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-27 05:26:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:45,805 INFO L225 Difference]: With dead ends: 1588 [2018-10-27 05:26:45,806 INFO L226 Difference]: Without dead ends: 1160 [2018-10-27 05:26:45,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:26:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-27 05:26:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-27 05:26:45,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-27 05:26:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-27 05:26:45,903 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 101 [2018-10-27 05:26:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:45,904 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-27 05:26:45,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:26:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-27 05:26:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 05:26:45,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:45,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:45,913 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:45,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:45,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1471379143, now seen corresponding path program 1 times [2018-10-27 05:26:45,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:45,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:45,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:45,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:45,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:26:46,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:26:46,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:26:46,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:46,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:26:46,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:26:46,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:26:46,270 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-27 05:26:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:48,757 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-27 05:26:48,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:26:48,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-27 05:26:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:48,778 INFO L225 Difference]: With dead ends: 2716 [2018-10-27 05:26:48,778 INFO L226 Difference]: Without dead ends: 1569 [2018-10-27 05:26:48,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:26:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-27 05:26:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-27 05:26:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-27 05:26:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-27 05:26:48,855 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 102 [2018-10-27 05:26:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:48,856 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-27 05:26:48,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:26:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-27 05:26:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-27 05:26:48,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:48,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:48,859 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:48,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:48,864 INFO L82 PathProgramCache]: Analyzing trace with hash -552645141, now seen corresponding path program 1 times [2018-10-27 05:26:48,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:48,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:48,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:48,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:48,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:26:49,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:26:49,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:26:49,071 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:49,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:26:49,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:26:49,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:26:49,072 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-27 05:26:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:51,767 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-27 05:26:51,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 05:26:51,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-10-27 05:26:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:51,799 INFO L225 Difference]: With dead ends: 4906 [2018-10-27 05:26:51,799 INFO L226 Difference]: Without dead ends: 3374 [2018-10-27 05:26:51,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:26:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-27 05:26:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-27 05:26:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-27 05:26:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-27 05:26:51,905 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 104 [2018-10-27 05:26:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:51,905 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-27 05:26:51,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:26:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-27 05:26:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 05:26:51,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:51,911 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:26:51,911 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:51,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1003054539, now seen corresponding path program 1 times [2018-10-27 05:26:51,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:51,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:51,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:51,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:51,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 05:26:52,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:26:52,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:26:52,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:52,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:26:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:26:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:26:52,145 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-27 05:26:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:54,448 INFO L93 Difference]: Finished difference Result 8796 states and 12469 transitions. [2018-10-27 05:26:54,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:26:54,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2018-10-27 05:26:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:54,478 INFO L225 Difference]: With dead ends: 8796 [2018-10-27 05:26:54,478 INFO L226 Difference]: Without dead ends: 5539 [2018-10-27 05:26:54,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 05:26:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-10-27 05:26:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5539. [2018-10-27 05:26:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2018-10-27 05:26:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7494 transitions. [2018-10-27 05:26:54,635 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7494 transitions. Word has length 189 [2018-10-27 05:26:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:54,636 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7494 transitions. [2018-10-27 05:26:54,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:26:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7494 transitions. [2018-10-27 05:26:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-27 05:26:54,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:54,653 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:26:54,653 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:54,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1300699199, now seen corresponding path program 1 times [2018-10-27 05:26:54,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:54,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:54,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:54,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:54,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:55,083 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 05:26:55,251 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-27 05:26:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:26:55,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:26:55,979 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:26:55,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-27 05:26:55,982 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:26:56,034 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:26:56,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:26:59,581 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:26:59,583 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:26:59,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:59,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:27:02,537 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 05:27:02,538 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:27:02,657 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-10-27 05:27:02,657 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:27:02,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:27:02,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2018-10-27 05:27:02,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:02,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:27:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:27:02,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:27:02,660 INFO L87 Difference]: Start difference. First operand 5539 states and 7494 transitions. Second operand 6 states. [2018-10-27 05:27:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:13,509 INFO L93 Difference]: Finished difference Result 11257 states and 15211 transitions. [2018-10-27 05:27:13,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:27:13,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2018-10-27 05:27:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:13,538 INFO L225 Difference]: With dead ends: 11257 [2018-10-27 05:27:13,538 INFO L226 Difference]: Without dead ends: 5724 [2018-10-27 05:27:13,570 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:27:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2018-10-27 05:27:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5722. [2018-10-27 05:27:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5722 states. [2018-10-27 05:27:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7685 transitions. [2018-10-27 05:27:13,734 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7685 transitions. Word has length 249 [2018-10-27 05:27:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:13,735 INFO L481 AbstractCegarLoop]: Abstraction has 5722 states and 7685 transitions. [2018-10-27 05:27:13,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:27:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7685 transitions. [2018-10-27 05:27:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-27 05:27:13,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:13,753 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:27:13,754 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:13,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:13,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1735802637, now seen corresponding path program 1 times [2018-10-27 05:27:13,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:13,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:13,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:13,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:13,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 160 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:27:14,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:14,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:27:14,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-10-27 05:27:14,841 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:27:14,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:27:14,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:27:18,769 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:27:18,770 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:27:18,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:18,784 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:27:20,755 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 05:27:20,755 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:27:21,103 INFO L415 sIntCurrentIteration]: We unified 333 AI predicates to 333 [2018-10-27 05:27:21,103 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:27:21,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:27:21,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 05:27:21,104 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:21,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:27:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:27:21,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:27:21,105 INFO L87 Difference]: Start difference. First operand 5722 states and 7685 transitions. Second operand 10 states. [2018-10-27 05:27:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:47,816 INFO L93 Difference]: Finished difference Result 12185 states and 16261 transitions. [2018-10-27 05:27:47,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:27:47,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 334 [2018-10-27 05:27:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:47,842 INFO L225 Difference]: With dead ends: 12185 [2018-10-27 05:27:47,843 INFO L226 Difference]: Without dead ends: 6282 [2018-10-27 05:27:47,869 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:27:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2018-10-27 05:27:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6280. [2018-10-27 05:27:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6280 states. [2018-10-27 05:27:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 8290 transitions. [2018-10-27 05:27:48,013 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 8290 transitions. Word has length 334 [2018-10-27 05:27:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:48,014 INFO L481 AbstractCegarLoop]: Abstraction has 6280 states and 8290 transitions. [2018-10-27 05:27:48,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:27:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 8290 transitions. [2018-10-27 05:27:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-27 05:27:48,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:48,043 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:27:48,043 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:48,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1561707318, now seen corresponding path program 1 times [2018-10-27 05:27:48,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:48,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:48,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:48,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:48,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 294 proven. 242 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-27 05:27:49,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:49,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:27:49,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-10-27 05:27:49,331 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:27:49,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:27:49,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:27:52,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:27:52,794 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:27:52,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:52,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:27:55,003 INFO L227 lantSequenceWeakener]: Weakened 431 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-27 05:27:55,003 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:27:55,732 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-10-27 05:27:55,732 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:27:55,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:27:55,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 05:27:55,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:55,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:27:55,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:27:55,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:27:55,735 INFO L87 Difference]: Start difference. First operand 6280 states and 8290 transitions. Second operand 10 states. [2018-10-27 05:28:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:26,216 INFO L93 Difference]: Finished difference Result 12001 states and 15990 transitions. [2018-10-27 05:28:26,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:28:26,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 434 [2018-10-27 05:28:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:26,241 INFO L225 Difference]: With dead ends: 12001 [2018-10-27 05:28:26,241 INFO L226 Difference]: Without dead ends: 5910 [2018-10-27 05:28:26,256 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:28:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2018-10-27 05:28:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5907. [2018-10-27 05:28:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5907 states. [2018-10-27 05:28:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5907 states to 5907 states and 7867 transitions. [2018-10-27 05:28:26,390 INFO L78 Accepts]: Start accepts. Automaton has 5907 states and 7867 transitions. Word has length 434 [2018-10-27 05:28:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:26,391 INFO L481 AbstractCegarLoop]: Abstraction has 5907 states and 7867 transitions. [2018-10-27 05:28:26,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:28:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5907 states and 7867 transitions. [2018-10-27 05:28:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-27 05:28:26,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:26,412 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:26,413 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:26,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2023204654, now seen corresponding path program 1 times [2018-10-27 05:28:26,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:26,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:26,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:26,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:26,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 05:28:28,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:28,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:28,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 471 with the following transitions: [2018-10-27 05:28:28,064 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:28,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:28,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:35,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:28:35,861 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:28:35,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:35,873 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:28:36,974 INFO L227 lantSequenceWeakener]: Weakened 467 states. On average, predicates are now at 80.17% of their original sizes. [2018-10-27 05:28:36,974 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:28:37,043 INFO L415 sIntCurrentIteration]: We unified 469 AI predicates to 469 [2018-10-27 05:28:37,044 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:28:37,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:28:37,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-10-27 05:28:37,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:37,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:28:37,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:28:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:28:37,045 INFO L87 Difference]: Start difference. First operand 5907 states and 7867 transitions. Second operand 9 states. [2018-10-27 05:28:56,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:56,124 INFO L93 Difference]: Finished difference Result 12693 states and 17361 transitions. [2018-10-27 05:28:56,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:28:56,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 470 [2018-10-27 05:28:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:56,151 INFO L225 Difference]: With dead ends: 12693 [2018-10-27 05:28:56,151 INFO L226 Difference]: Without dead ends: 7160 [2018-10-27 05:28:56,169 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 476 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:28:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2018-10-27 05:28:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 6939. [2018-10-27 05:28:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6939 states. [2018-10-27 05:28:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6939 states to 6939 states and 9124 transitions. [2018-10-27 05:28:56,308 INFO L78 Accepts]: Start accepts. Automaton has 6939 states and 9124 transitions. Word has length 470 [2018-10-27 05:28:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:56,309 INFO L481 AbstractCegarLoop]: Abstraction has 6939 states and 9124 transitions. [2018-10-27 05:28:56,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:28:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6939 states and 9124 transitions. [2018-10-27 05:28:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-10-27 05:28:56,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:56,336 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:56,336 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:56,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1157088157, now seen corresponding path program 1 times [2018-10-27 05:28:56,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:56,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:56,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:56,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:56,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 330 proven. 309 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-27 05:28:57,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:57,512 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:57,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 538 with the following transitions: [2018-10-27 05:28:57,513 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:57,518 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:57,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:03,095 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:03,096 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:29:03,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:03,103 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:03,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:03,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:03,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:03,113 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:03,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-27 05:29:03,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:04,585 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2018-10-27 05:29:04,752 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-27 05:29:04,972 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-27 05:29:05,145 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:29:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 328 proven. 104 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-27 05:29:06,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:06,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:29:06,432 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:06,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:29:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:29:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:29:06,435 INFO L87 Difference]: Start difference. First operand 6939 states and 9124 transitions. Second operand 17 states. [2018-10-27 05:29:07,214 WARN L179 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2018-10-27 05:29:10,860 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:29:11,287 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:29:12,319 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-10-27 05:29:13,174 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 05:29:13,335 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-10-27 05:29:16,595 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-10-27 05:29:17,597 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-10-27 05:29:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:20,436 INFO L93 Difference]: Finished difference Result 17560 states and 24601 transitions. [2018-10-27 05:29:20,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-27 05:29:20,437 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 537 [2018-10-27 05:29:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:20,478 INFO L225 Difference]: With dead ends: 17560 [2018-10-27 05:29:20,478 INFO L226 Difference]: Without dead ends: 10995 [2018-10-27 05:29:20,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1107 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 05:29:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10995 states. [2018-10-27 05:29:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10995 to 10623. [2018-10-27 05:29:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10623 states. [2018-10-27 05:29:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10623 states to 10623 states and 13689 transitions. [2018-10-27 05:29:20,929 INFO L78 Accepts]: Start accepts. Automaton has 10623 states and 13689 transitions. Word has length 537 [2018-10-27 05:29:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:20,930 INFO L481 AbstractCegarLoop]: Abstraction has 10623 states and 13689 transitions. [2018-10-27 05:29:20,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:29:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10623 states and 13689 transitions. [2018-10-27 05:29:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-10-27 05:29:20,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:20,952 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:20,953 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:20,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:20,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1330600406, now seen corresponding path program 1 times [2018-10-27 05:29:20,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:20,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:20,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:20,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:20,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:22,268 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 05:29:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 439 proven. 445 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-27 05:29:23,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:23,273 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:23,273 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 544 with the following transitions: [2018-10-27 05:29:23,273 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:23,277 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:23,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:33,313 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:33,314 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:29:33,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:33,322 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:33,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:33,322 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:33,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:33,331 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:33,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 781 proven. 2 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-27 05:29:33,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 433 proven. 104 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2018-10-27 05:29:34,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:34,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 05:29:34,608 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:34,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:29:34,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:29:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:29:34,609 INFO L87 Difference]: Start difference. First operand 10623 states and 13689 transitions. Second operand 17 states. [2018-10-27 05:29:40,465 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-10-27 05:29:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:41,469 INFO L93 Difference]: Finished difference Result 21644 states and 29342 transitions. [2018-10-27 05:29:41,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-27 05:29:41,470 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 543 [2018-10-27 05:29:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:41,516 INFO L225 Difference]: With dead ends: 21644 [2018-10-27 05:29:41,516 INFO L226 Difference]: Without dead ends: 10158 [2018-10-27 05:29:41,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1096 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2018-10-27 05:29:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2018-10-27 05:29:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 9939. [2018-10-27 05:29:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9939 states. [2018-10-27 05:29:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9939 states to 9939 states and 11555 transitions. [2018-10-27 05:29:41,792 INFO L78 Accepts]: Start accepts. Automaton has 9939 states and 11555 transitions. Word has length 543 [2018-10-27 05:29:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:41,792 INFO L481 AbstractCegarLoop]: Abstraction has 9939 states and 11555 transitions. [2018-10-27 05:29:41,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:29:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 9939 states and 11555 transitions. [2018-10-27 05:29:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-10-27 05:29:41,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:41,805 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:41,806 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:41,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1779031265, now seen corresponding path program 2 times [2018-10-27 05:29:41,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:41,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:41,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:41,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:41,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 471 proven. 104 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2018-10-27 05:29:42,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:42,708 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:42,708 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-27 05:29:42,709 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:29:42,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:42,709 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:42,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 05:29:42,718 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-27 05:29:42,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 05:29:42,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 05:29:42,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 729 proven. 46 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-10-27 05:29:43,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 769 proven. 104 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-10-27 05:29:43,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:43,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2018-10-27 05:29:43,659 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:43,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:29:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:29:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-27 05:29:43,661 INFO L87 Difference]: Start difference. First operand 9939 states and 11555 transitions. Second operand 9 states. [2018-10-27 05:29:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:49,466 INFO L93 Difference]: Finished difference Result 26961 states and 39877 transitions. [2018-10-27 05:29:49,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:29:49,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 648 [2018-10-27 05:29:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:49,595 INFO L225 Difference]: With dead ends: 26961 [2018-10-27 05:29:49,596 INFO L226 Difference]: Without dead ends: 17396 [2018-10-27 05:29:49,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1294 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-10-27 05:29:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17396 states. [2018-10-27 05:29:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17396 to 16830. [2018-10-27 05:29:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16830 states. [2018-10-27 05:29:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16830 states to 16830 states and 20178 transitions. [2018-10-27 05:29:50,245 INFO L78 Accepts]: Start accepts. Automaton has 16830 states and 20178 transitions. Word has length 648 [2018-10-27 05:29:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:50,245 INFO L481 AbstractCegarLoop]: Abstraction has 16830 states and 20178 transitions. [2018-10-27 05:29:50,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:29:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16830 states and 20178 transitions. [2018-10-27 05:29:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-27 05:29:50,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:50,263 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:50,263 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:50,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1759764776, now seen corresponding path program 1 times [2018-10-27 05:29:50,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:50,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:50,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 05:29:50,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:50,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 478 proven. 104 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2018-10-27 05:29:50,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:50,976 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:50,976 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 656 with the following transitions: [2018-10-27 05:29:50,977 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:50,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:50,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:56,409 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:56,410 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:29:56,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:56,448 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:56,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:56,449 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:56,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:56,458 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:56,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 858 proven. 2 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-27 05:29:57,071 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 478 proven. 104 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2018-10-27 05:29:58,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:58,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:29:58,356 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:58,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:29:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:29:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:29:58,358 INFO L87 Difference]: Start difference. First operand 16830 states and 20178 transitions. Second operand 7 states. [2018-10-27 05:30:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:01,889 INFO L93 Difference]: Finished difference Result 38829 states and 56068 transitions. [2018-10-27 05:30:01,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:30:01,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 655 [2018-10-27 05:30:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:02,081 INFO L225 Difference]: With dead ends: 38829 [2018-10-27 05:30:02,081 INFO L226 Difference]: Without dead ends: 22373 [2018-10-27 05:30:02,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1313 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:30:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22373 states. [2018-10-27 05:30:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22373 to 21831. [2018-10-27 05:30:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21831 states. [2018-10-27 05:30:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21831 states to 21831 states and 26962 transitions. [2018-10-27 05:30:02,859 INFO L78 Accepts]: Start accepts. Automaton has 21831 states and 26962 transitions. Word has length 655 [2018-10-27 05:30:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:02,860 INFO L481 AbstractCegarLoop]: Abstraction has 21831 states and 26962 transitions. [2018-10-27 05:30:02,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:30:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 21831 states and 26962 transitions. [2018-10-27 05:30:02,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2018-10-27 05:30:02,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:02,876 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2018-10-27 05:30:02,876 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:02,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash -734235196, now seen corresponding path program 1 times [2018-10-27 05:30:02,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:02,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:02,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:02,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:02,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:03,572 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:30:03,761 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:30:03,982 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:30:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 516 proven. 857 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-10-27 05:30:05,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:05,631 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:05,632 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 783 with the following transitions: [2018-10-27 05:30:05,632 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:05,635 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:05,635 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:10,930 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:10,930 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:30:10,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:10,956 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:10,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:10,957 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:30:10,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:10,968 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:11,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 1117 proven. 2 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-10-27 05:30:12,089 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 637 proven. 104 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2018-10-27 05:30:12,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:12,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-10-27 05:30:12,733 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:12,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:30:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:30:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:30:12,735 INFO L87 Difference]: Start difference. First operand 21831 states and 26962 transitions. Second operand 18 states. [2018-10-27 05:30:17,045 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-27 05:30:20,306 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2018-10-27 05:30:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:23,038 INFO L93 Difference]: Finished difference Result 43907 states and 55334 transitions. [2018-10-27 05:30:23,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-27 05:30:23,039 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 782 [2018-10-27 05:30:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:23,135 INFO L225 Difference]: With dead ends: 43907 [2018-10-27 05:30:23,136 INFO L226 Difference]: Without dead ends: 22265 [2018-10-27 05:30:23,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1587 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=972, Invalid=3998, Unknown=0, NotChecked=0, Total=4970 [2018-10-27 05:30:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2018-10-27 05:30:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 19448. [2018-10-27 05:30:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19448 states. Received shutdown request... [2018-10-27 05:30:23,831 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:30:23,838 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:30:23,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:30:23 BoogieIcfgContainer [2018-10-27 05:30:23,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:30:23,839 INFO L168 Benchmark]: Toolchain (without parser) took 229221.37 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,840 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-27 05:30:23,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 257.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,842 INFO L168 Benchmark]: Boogie Preprocessor took 142.06 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,843 INFO L168 Benchmark]: RCFGBuilder took 3713.40 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: 121.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,843 INFO L168 Benchmark]: TraceAbstraction took 224288.17 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-27 05:30:23,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 812.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 257.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.06 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3713.40 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: 121.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224288.17 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while ReachableStatesComputation was computing reachable states (18137 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.2s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 141.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1929 SDtfs, 23712 SDslu, 3012 SDs, 0 SdLazy, 30381 SolverSat, 5376 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 8169 GetRequests, 7865 SyntacticMatches, 18 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3714 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21831occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 45.2s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9971722170679549 AbsIntWeakeningRatio, 0.09035738368172623 AbsIntAvgWeakeningVarsNumRemoved, 16.064059339177344 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 2076 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 8344 NumberOfCodeBlocks, 8123 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11485 ConstructedInterpolants, 0 QuantifiedInterpolants, 33736626 SizeOfPredicates, 24 NumberOfNonLiveVariables, 4355 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 17287/20108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown