java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:03:01,039 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:03:01,041 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:03:01,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:03:01,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:03:01,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:03:01,055 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:03:01,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:03:01,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:03:01,060 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:03:01,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:03:01,061 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:03:01,062 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:03:01,063 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:03:01,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:03:01,064 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:03:01,065 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:03:01,067 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:03:01,069 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:03:01,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:03:01,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:03:01,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:03:01,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:03:01,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:03:01,075 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:03:01,076 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:03:01,077 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:03:01,078 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:03:01,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:03:01,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:03:01,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:03:01,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 19:03:01,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:03:01,098 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:03:01,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:03:01,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:03:01,100 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:03:01,100 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:03:01,100 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:03:01,100 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:03:01,101 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:03:01,101 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:03:01,101 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:03:01,101 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:03:01,101 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:03:01,102 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:03:01,102 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:03:01,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:03:01,103 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:03:01,103 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:03:01,103 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:03:01,103 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:03:01,103 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:03:01,104 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:03:01,104 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:03:01,104 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:03:01,104 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:03:01,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:03:01,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:03:01,105 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:03:01,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:03:01,105 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:03:01,105 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:03:01,106 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:03:01,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:03:01,106 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:03:01,106 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:03:01,106 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:03:01,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:03:01,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:03:01,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:03:01,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:03:01,169 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:03:01,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-12 19:03:01,221 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30aea29ee/a2a029246b5b485da9509d8d0de3f446/FLAG4a0a0125f [2018-11-12 19:03:01,861 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:03:01,862 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-12 19:03:01,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30aea29ee/a2a029246b5b485da9509d8d0de3f446/FLAG4a0a0125f [2018-11-12 19:03:01,905 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30aea29ee/a2a029246b5b485da9509d8d0de3f446 [2018-11-12 19:03:01,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:03:01,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:03:01,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:03:01,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:03:01,929 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:03:01,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:03:01" (1/1) ... [2018-11-12 19:03:01,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba1e25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:01, skipping insertion in model container [2018-11-12 19:03:01,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:03:01" (1/1) ... [2018-11-12 19:03:01,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:03:02,007 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:03:02,546 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:03:02,550 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:03:02,725 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:03:02,744 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:03:02,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02 WrapperNode [2018-11-12 19:03:02,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:03:02,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:03:02,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:03:02,746 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:03:02,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:03:02,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:03:02,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:03:02,908 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:03:02,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:02,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:03,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... [2018-11-12 19:03:03,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:03:03,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:03:03,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:03:03,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:03:03,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:03:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:03:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:03:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:03:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:03:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:03:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:03:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:03:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:03:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:03:06,660 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:03:06,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:03:06 BoogieIcfgContainer [2018-11-12 19:03:06,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:03:06,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:03:06,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:03:06,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:03:06,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:03:01" (1/3) ... [2018-11-12 19:03:06,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3740624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:03:06, skipping insertion in model container [2018-11-12 19:03:06,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:03:02" (2/3) ... [2018-11-12 19:03:06,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3740624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:03:06, skipping insertion in model container [2018-11-12 19:03:06,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:03:06" (3/3) ... [2018-11-12 19:03:06,670 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-11-12 19:03:06,678 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:03:06,687 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:03:06,705 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:03:06,745 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:03:06,745 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:03:06,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:03:06,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:03:06,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:03:06,747 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:03:06,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:03:06,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:03:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 19:03:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-12 19:03:06,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:06,789 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:03:06,791 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:06,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-11-12 19:03:06,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:06,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:06,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:06,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:06,855 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:03:07,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:03:07,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:03:07,278 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:07,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:03:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:03:07,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:03:07,304 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-12 19:03:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:03:10,146 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-12 19:03:10,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:03:10,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-12 19:03:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:03:10,171 INFO L225 Difference]: With dead ends: 894 [2018-11-12 19:03:10,172 INFO L226 Difference]: Without dead ends: 633 [2018-11-12 19:03:10,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:03:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-12 19:03:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-12 19:03:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 19:03:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-12 19:03:10,279 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-11-12 19:03:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:03:10,280 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-12 19:03:10,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:03:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-12 19:03:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-12 19:03:10,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:10,290 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:03:10,290 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:10,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-11-12 19:03:10,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:10,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:10,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:10,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:10,293 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:03:10,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:03:10,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:03:10,654 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:10,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:03:10,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:03:10,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:03:10,657 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-12 19:03:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:03:13,571 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-11-12 19:03:13,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:03:13,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-12 19:03:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:03:13,580 INFO L225 Difference]: With dead ends: 1594 [2018-11-12 19:03:13,580 INFO L226 Difference]: Without dead ends: 780 [2018-11-12 19:03:13,587 INFO L604 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 [2018-11-12 19:03:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-12 19:03:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-12 19:03:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-12 19:03:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-11-12 19:03:13,647 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-11-12 19:03:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:03:13,648 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-11-12 19:03:13,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:03:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-11-12 19:03:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 19:03:13,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:13,669 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-11-12 19:03:13,670 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:13,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-11-12 19:03:13,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:13,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:13,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:13,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:13,673 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-12 19:03:14,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:03:14,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:03:14,038 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:14,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:03:14,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:03:14,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:03:14,039 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-11-12 19:03:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:03:17,043 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-11-12 19:03:17,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:03:17,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-11-12 19:03:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:03:17,068 INFO L225 Difference]: With dead ends: 3018 [2018-11-12 19:03:17,071 INFO L226 Difference]: Without dead ends: 2244 [2018-11-12 19:03:17,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:03:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-11-12 19:03:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-11-12 19:03:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-12 19:03:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-11-12 19:03:17,175 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-11-12 19:03:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:03:17,176 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-11-12 19:03:17,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:03:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-11-12 19:03:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-12 19:03:17,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:17,195 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:03:17,195 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:17,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:17,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-11-12 19:03:17,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:17,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:17,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:17,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:17,198 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:17,787 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-12 19:03:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:03:18,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:03:18,209 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:03:18,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-12 19:03:18,212 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:03:18,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:03:18,279 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:03:19,011 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:03:19,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:03:19,151 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Performed 1443 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1443 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:03:19,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:19,202 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:03:20,104 INFO L227 lantSequenceWeakener]: Weakened 310 states. On average, predicates are now at 77.79% of their original sizes. [2018-11-12 19:03:20,104 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:03:20,610 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-11-12 19:03:20,611 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:03:20,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:03:20,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-12 19:03:20,612 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:20,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:03:20,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:03:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:03:20,614 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 8 states. [2018-11-12 19:03:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:03:30,935 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-11-12 19:03:30,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:03:30,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2018-11-12 19:03:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:03:30,952 INFO L225 Difference]: With dead ends: 4667 [2018-11-12 19:03:30,952 INFO L226 Difference]: Without dead ends: 2429 [2018-11-12 19:03:30,966 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:03:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-11-12 19:03:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-11-12 19:03:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-11-12 19:03:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-11-12 19:03:31,041 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-11-12 19:03:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:03:31,041 INFO L480 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-11-12 19:03:31,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:03:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-11-12 19:03:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-12 19:03:31,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:31,059 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:03:31,060 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:31,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-11-12 19:03:31,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:31,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:31,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:31,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:31,062 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:03:32,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:03:32,369 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:03:32,369 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-12 19:03:32,370 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:03:32,380 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:03:32,381 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:03:32,578 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:03:32,944 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:03:32,945 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Performed 3319 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3319 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:03:32,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:32,982 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:03:33,818 INFO L227 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-12 19:03:33,818 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:03:34,891 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-11-12 19:03:34,892 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:03:34,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:03:34,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-12 19:03:34,892 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:34,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:03:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:03:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:03:34,894 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 20 states. [2018-11-12 19:04:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:04:01,718 INFO L93 Difference]: Finished difference Result 6041 states and 8024 transitions. [2018-11-12 19:04:01,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:04:01,719 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 404 [2018-11-12 19:04:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:04:01,733 INFO L225 Difference]: With dead ends: 6041 [2018-11-12 19:04:01,734 INFO L226 Difference]: Without dead ends: 2797 [2018-11-12 19:04:01,748 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 413 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:04:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2018-11-12 19:04:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2795. [2018-11-12 19:04:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2018-11-12 19:04:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3716 transitions. [2018-11-12 19:04:01,821 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3716 transitions. Word has length 404 [2018-11-12 19:04:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:04:01,822 INFO L480 AbstractCegarLoop]: Abstraction has 2795 states and 3716 transitions. [2018-11-12 19:04:01,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:04:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3716 transitions. [2018-11-12 19:04:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-11-12 19:04:01,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:04:01,842 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:04:01,842 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:04:01,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1006457696, now seen corresponding path program 1 times [2018-11-12 19:04:01,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:04:01,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:01,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:04:01,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:01,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:04:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:04:02,370 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:04:02,579 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:04:02,793 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:04:03,194 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:04:03,513 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 19:04:03,876 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-11-12 19:04:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 154 proven. 317 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:04:04,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:04:04,497 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:04:04,497 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 431 with the following transitions: [2018-11-12 19:04:04,498 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:04:04,502 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:04:04,502 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:04:04,631 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:04:04,898 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:04:04,898 INFO L272 AbstractInterpreter]: Visited 161 different actions 318 times. Merged at 5 different actions 7 times. Never widened. Performed 4550 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4550 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:04:04,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:04,919 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:04:05,478 INFO L227 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 80.2% of their original sizes. [2018-11-12 19:04:05,479 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:04:06,226 INFO L415 sIntCurrentIteration]: We unified 429 AI predicates to 429 [2018-11-12 19:04:06,226 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:04:06,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:04:06,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [15] total 36 [2018-11-12 19:04:06,227 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:04:06,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:04:06,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:04:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:04:06,229 INFO L87 Difference]: Start difference. First operand 2795 states and 3716 transitions. Second operand 23 states. [2018-11-12 19:04:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:04:20,114 INFO L93 Difference]: Finished difference Result 5406 states and 7330 transitions. [2018-11-12 19:04:20,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:04:20,114 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 430 [2018-11-12 19:04:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:04:20,131 INFO L225 Difference]: With dead ends: 5406 [2018-11-12 19:04:20,131 INFO L226 Difference]: Without dead ends: 3168 [2018-11-12 19:04:20,145 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 452 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2018-11-12 19:04:20,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2018-11-12 19:04:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3163. [2018-11-12 19:04:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2018-11-12 19:04:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4112 transitions. [2018-11-12 19:04:20,234 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4112 transitions. Word has length 430 [2018-11-12 19:04:20,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:04:20,235 INFO L480 AbstractCegarLoop]: Abstraction has 3163 states and 4112 transitions. [2018-11-12 19:04:20,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:04:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4112 transitions. [2018-11-12 19:04:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-11-12 19:04:20,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:04:20,257 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:04:20,257 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:04:20,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash 358755412, now seen corresponding path program 1 times [2018-11-12 19:04:20,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:04:20,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:20,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:04:20,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:20,259 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:04:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:04:20,763 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:04:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 257 proven. 226 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:04:21,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:04:21,502 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:04:21,503 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 441 with the following transitions: [2018-11-12 19:04:21,503 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [698], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:04:21,507 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:04:21,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:04:22,067 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:04:22,281 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:04:22,281 INFO L272 AbstractInterpreter]: Visited 161 different actions 318 times. Merged at 5 different actions 7 times. Never widened. Performed 5683 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5683 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:04:22,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:22,290 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:04:22,857 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 77.61% of their original sizes. [2018-11-12 19:04:22,857 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:04:23,488 INFO L415 sIntCurrentIteration]: We unified 439 AI predicates to 439 [2018-11-12 19:04:23,488 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:04:23,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:04:23,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [12] total 32 [2018-11-12 19:04:23,489 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:04:23,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:04:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:04:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:04:23,491 INFO L87 Difference]: Start difference. First operand 3163 states and 4112 transitions. Second operand 22 states. [2018-11-12 19:04:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:04:46,217 INFO L93 Difference]: Finished difference Result 6597 states and 8607 transitions. [2018-11-12 19:04:46,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:04:46,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 440 [2018-11-12 19:04:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:04:46,233 INFO L225 Difference]: With dead ends: 6597 [2018-11-12 19:04:46,234 INFO L226 Difference]: Without dead ends: 3353 [2018-11-12 19:04:46,249 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 449 GetRequests, 413 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:04:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2018-11-12 19:04:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3165. [2018-11-12 19:04:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3165 states. [2018-11-12 19:04:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 4113 transitions. [2018-11-12 19:04:46,329 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 4113 transitions. Word has length 440 [2018-11-12 19:04:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:04:46,329 INFO L480 AbstractCegarLoop]: Abstraction has 3165 states and 4113 transitions. [2018-11-12 19:04:46,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:04:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 4113 transitions. [2018-11-12 19:04:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-11-12 19:04:46,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:04:46,353 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:04:46,353 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:04:46,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:46,354 INFO L82 PathProgramCache]: Analyzing trace with hash 99334287, now seen corresponding path program 1 times [2018-11-12 19:04:46,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:04:46,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:46,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:04:46,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:04:46,355 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:04:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:04:46,843 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:04:47,022 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:04:47,233 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:04:47,721 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:04:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 241 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:04:48,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:04:48,504 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:04:48,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 466 with the following transitions: [2018-11-12 19:04:48,505 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [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], [798], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:04:48,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:04:48,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:04:48,573 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:04:48,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:04:48,789 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Performed 3319 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3319 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:04:48,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:04:48,818 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:04:50,058 INFO L227 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-12 19:04:50,058 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:04:50,526 INFO L415 sIntCurrentIteration]: We unified 464 AI predicates to 464 [2018-11-12 19:04:50,526 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:04:50,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:04:50,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [13] total 31 [2018-11-12 19:04:50,528 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:04:50,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:04:50,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:04:50,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:04:50,530 INFO L87 Difference]: Start difference. First operand 3165 states and 4113 transitions. Second operand 20 states. [2018-11-12 19:05:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:05:12,029 INFO L93 Difference]: Finished difference Result 6597 states and 8607 transitions. [2018-11-12 19:05:12,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:05:12,030 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 465 [2018-11-12 19:05:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:05:12,043 INFO L225 Difference]: With dead ends: 6597 [2018-11-12 19:05:12,044 INFO L226 Difference]: Without dead ends: 3353 [2018-11-12 19:05:12,056 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 474 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:05:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2018-11-12 19:05:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3165. [2018-11-12 19:05:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3165 states. [2018-11-12 19:05:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 4113 transitions. [2018-11-12 19:05:12,133 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 4113 transitions. Word has length 465 [2018-11-12 19:05:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:05:12,133 INFO L480 AbstractCegarLoop]: Abstraction has 3165 states and 4113 transitions. [2018-11-12 19:05:12,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:05:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 4113 transitions. [2018-11-12 19:05:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-11-12 19:05:12,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:05:12,157 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:05:12,157 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:05:12,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2095102784, now seen corresponding path program 1 times [2018-11-12 19:05:12,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:05:12,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:12,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:05:12,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:12,159 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:05:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:05:12,647 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:05:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 228 proven. 286 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:05:13,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:05:13,249 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:05:13,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 479 with the following transitions: [2018-11-12 19:05:13,250 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [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], [822], [823], [827], [831], [835], [839], [843], [847], [850], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:05:13,253 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:05:13,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:05:13,314 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:05:13,457 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:05:13,457 INFO L272 AbstractInterpreter]: Visited 168 different actions 329 times. Merged at 4 different actions 4 times. Never widened. Performed 3486 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3486 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:05:13,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:13,467 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:05:13,963 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 77.61% of their original sizes. [2018-11-12 19:05:13,963 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:05:14,470 INFO L415 sIntCurrentIteration]: We unified 477 AI predicates to 477 [2018-11-12 19:05:14,470 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:05:14,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:05:14,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-11-12 19:05:14,471 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:05:14,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:05:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:05:14,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:05:14,473 INFO L87 Difference]: Start difference. First operand 3165 states and 4113 transitions. Second operand 23 states. [2018-11-12 19:05:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:05:29,842 INFO L93 Difference]: Finished difference Result 6597 states and 8607 transitions. [2018-11-12 19:05:29,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:05:29,843 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 478 [2018-11-12 19:05:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:05:29,858 INFO L225 Difference]: With dead ends: 6597 [2018-11-12 19:05:29,858 INFO L226 Difference]: Without dead ends: 3353 [2018-11-12 19:05:29,867 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 487 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:05:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2018-11-12 19:05:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3165. [2018-11-12 19:05:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3165 states. [2018-11-12 19:05:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 4113 transitions. [2018-11-12 19:05:29,940 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 4113 transitions. Word has length 478 [2018-11-12 19:05:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:05:29,941 INFO L480 AbstractCegarLoop]: Abstraction has 3165 states and 4113 transitions. [2018-11-12 19:05:29,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:05:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 4113 transitions. [2018-11-12 19:05:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-12 19:05:29,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:05:29,968 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:05:29,968 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:05:29,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 318075160, now seen corresponding path program 1 times [2018-11-12 19:05:29,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:05:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:29,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:05:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:29,970 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:05:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:05:30,464 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:05:30,644 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:05:30,854 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:05:31,350 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:05:31,700 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-12 19:05:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 216 proven. 298 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:05:32,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:05:32,750 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:05:32,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 491 with the following transitions: [2018-11-12 19:05:32,751 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [659], [663], [666], [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], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [898], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:05:32,753 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:05:32,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:05:32,824 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:05:33,009 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:05:33,010 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Performed 3753 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3753 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:05:33,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:33,017 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:05:33,555 INFO L227 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-12 19:05:33,555 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:05:33,977 INFO L415 sIntCurrentIteration]: We unified 489 AI predicates to 489 [2018-11-12 19:05:33,977 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:05:33,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:05:33,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 32 [2018-11-12 19:05:33,978 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:05:33,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:05:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:05:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:05:33,979 INFO L87 Difference]: Start difference. First operand 3165 states and 4113 transitions. Second operand 20 states. [2018-11-12 19:05:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:05:51,040 INFO L93 Difference]: Finished difference Result 6595 states and 8605 transitions. [2018-11-12 19:05:51,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:05:51,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 490 [2018-11-12 19:05:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:05:51,053 INFO L225 Difference]: With dead ends: 6595 [2018-11-12 19:05:51,053 INFO L226 Difference]: Without dead ends: 3351 [2018-11-12 19:05:51,061 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 499 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:05:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2018-11-12 19:05:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3163. [2018-11-12 19:05:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2018-11-12 19:05:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4111 transitions. [2018-11-12 19:05:51,128 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4111 transitions. Word has length 490 [2018-11-12 19:05:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:05:51,128 INFO L480 AbstractCegarLoop]: Abstraction has 3163 states and 4111 transitions. [2018-11-12 19:05:51,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:05:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4111 transitions. [2018-11-12 19:05:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-11-12 19:05:51,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:05:51,147 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:05:51,147 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:05:51,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1011924707, now seen corresponding path program 1 times [2018-11-12 19:05:51,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:05:51,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:51,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:05:51,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:05:51,149 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:05:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:05:51,488 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:05:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 336 proven. 285 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-12 19:05:51,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:05:51,751 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:05:51,751 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-11-12 19:05:51,751 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:05:51,754 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:05:51,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:05:52,388 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:05:52,589 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:05:52,589 INFO L272 AbstractInterpreter]: Visited 162 different actions 480 times. Merged at 7 different actions 16 times. Never widened. Performed 6483 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6483 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:05:52,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:05:52,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:05:53,054 INFO L227 lantSequenceWeakener]: Weakened 504 states. On average, predicates are now at 80.28% of their original sizes. [2018-11-12 19:05:53,054 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:05:53,193 INFO L415 sIntCurrentIteration]: We unified 506 AI predicates to 506 [2018-11-12 19:05:53,194 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:05:53,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:05:53,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 19:05:53,194 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:05:53,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:05:53,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:05:53,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:05:53,195 INFO L87 Difference]: Start difference. First operand 3163 states and 4111 transitions. Second operand 10 states. [2018-11-12 19:06:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:01,019 INFO L93 Difference]: Finished difference Result 5977 states and 8177 transitions. [2018-11-12 19:06:01,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:06:01,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 507 [2018-11-12 19:06:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:01,036 INFO L225 Difference]: With dead ends: 5977 [2018-11-12 19:06:01,036 INFO L226 Difference]: Without dead ends: 3739 [2018-11-12 19:06:01,045 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 514 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:06:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2018-11-12 19:06:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3724. [2018-11-12 19:06:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3724 states. [2018-11-12 19:06:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 4844 transitions. [2018-11-12 19:06:01,125 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 4844 transitions. Word has length 507 [2018-11-12 19:06:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:01,126 INFO L480 AbstractCegarLoop]: Abstraction has 3724 states and 4844 transitions. [2018-11-12 19:06:01,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:06:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 4844 transitions. [2018-11-12 19:06:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-11-12 19:06:01,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:01,141 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:06:01,141 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:01,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:01,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1675413689, now seen corresponding path program 1 times [2018-11-12 19:06:01,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:01,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:01,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:01,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:01,143 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 281 proven. 166 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-11-12 19:06:01,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:06:01,634 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:06:01,634 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 516 with the following transitions: [2018-11-12 19:06:01,634 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:06:01,637 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:06:01,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:06:01,706 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:06:01,986 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:06:01,986 INFO L272 AbstractInterpreter]: Visited 162 different actions 481 times. Merged at 7 different actions 17 times. Never widened. Performed 5266 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5266 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:06:01,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:01,993 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:06:02,556 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-12 19:06:02,557 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:06:02,966 INFO L415 sIntCurrentIteration]: We unified 514 AI predicates to 514 [2018-11-12 19:06:02,967 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:06:02,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:06:02,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:06:02,967 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:02,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:06:02,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:06:02,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:06:02,969 INFO L87 Difference]: Start difference. First operand 3724 states and 4844 transitions. Second operand 18 states. [2018-11-12 19:06:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:21,629 INFO L93 Difference]: Finished difference Result 7910 states and 10266 transitions. [2018-11-12 19:06:21,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:06:21,629 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 515 [2018-11-12 19:06:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:21,642 INFO L225 Difference]: With dead ends: 7910 [2018-11-12 19:06:21,643 INFO L226 Difference]: Without dead ends: 4105 [2018-11-12 19:06:21,652 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 527 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:06:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2018-11-12 19:06:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3914. [2018-11-12 19:06:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3914 states. [2018-11-12 19:06:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 5032 transitions. [2018-11-12 19:06:21,726 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 5032 transitions. Word has length 515 [2018-11-12 19:06:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:21,727 INFO L480 AbstractCegarLoop]: Abstraction has 3914 states and 5032 transitions. [2018-11-12 19:06:21,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:06:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 5032 transitions. [2018-11-12 19:06:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-12 19:06:21,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:21,740 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:06:21,740 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:21,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2115706272, now seen corresponding path program 1 times [2018-11-12 19:06:21,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:21,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:21,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:21,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:21,742 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 299 proven. 483 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:06:23,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:06:23,302 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:06:23,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-11-12 19:06:23,302 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:06:23,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:06:23,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:06:23,377 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:06:23,748 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:06:23,748 INFO L272 AbstractInterpreter]: Visited 162 different actions 481 times. Merged at 7 different actions 17 times. Never widened. Performed 6159 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6159 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:06:23,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:23,755 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:06:24,509 INFO L227 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 77.73% of their original sizes. [2018-11-12 19:06:24,510 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:06:24,929 INFO L415 sIntCurrentIteration]: We unified 517 AI predicates to 517 [2018-11-12 19:06:24,930 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:06:24,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:06:24,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [15] total 33 [2018-11-12 19:06:24,930 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:24,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:06:24,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:06:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:06:24,932 INFO L87 Difference]: Start difference. First operand 3914 states and 5032 transitions. Second operand 20 states. [2018-11-12 19:06:47,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:47,880 INFO L93 Difference]: Finished difference Result 7912 states and 10267 transitions. [2018-11-12 19:06:47,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:06:47,880 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 518 [2018-11-12 19:06:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:47,891 INFO L225 Difference]: With dead ends: 7912 [2018-11-12 19:06:47,891 INFO L226 Difference]: Without dead ends: 4107 [2018-11-12 19:06:47,901 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 533 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 19:06:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2018-11-12 19:06:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3732. [2018-11-12 19:06:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3732 states. [2018-11-12 19:06:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 4849 transitions. [2018-11-12 19:06:47,969 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 4849 transitions. Word has length 518 [2018-11-12 19:06:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:47,970 INFO L480 AbstractCegarLoop]: Abstraction has 3732 states and 4849 transitions. [2018-11-12 19:06:47,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:06:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 4849 transitions. [2018-11-12 19:06:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-11-12 19:06:47,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:47,980 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-12 19:06:47,980 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:47,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1083636141, now seen corresponding path program 1 times [2018-11-12 19:06:47,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:47,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:47,982 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 19:06:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 318 proven. 521 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:06:49,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:06:49,724 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:06:49,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 538 with the following transitions: [2018-11-12 19:06:49,724 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [635], [639], [642], [643], [647], [651], [655], [658], [659], [663], [666], [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], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:06:49,726 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:06:49,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:06:49,727 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:06:49,728 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:06:49,729 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:06:49,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:06:49,729 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:06:49,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:49,742 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:06:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:49,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:06:49,923 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:06:50,124 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:06:50,125 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:06:50,130 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:06:50,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:06:50 BoogieIcfgContainer [2018-11-12 19:06:50,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:06:50,131 INFO L168 Benchmark]: Toolchain (without parser) took 228212.39 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 19:06:50,132 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:06:50,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:06:50,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:06:50,134 INFO L168 Benchmark]: Boogie Preprocessor took 103.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:06:50,135 INFO L168 Benchmark]: RCFGBuilder took 3649.51 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: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:06:50,136 INFO L168 Benchmark]: TraceAbstraction took 223468.32 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:06:50,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 820.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3649.51 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: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223468.32 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was analyzing trace of length 538 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 223.3s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 186.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2367 SDtfs, 28528 SDslu, 1982 SDs, 0 SdLazy, 30166 SolverSat, 2448 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.2s Time, PredicateUnifierStatistics: 20 DeclaredPredicates, 4684 GetRequests, 4396 SyntacticMatches, 6 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2165 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3914occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.2s AbstIntTime, 11 AbstIntIterations, 10 AbstIntStrong, 0.9977022352492206 AbsIntWeakeningRatio, 0.07287093942054433 AbsIntAvgWeakeningVarsNumRemoved, 15.61611062335382 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 1541 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 4982 NumberOfCodeBlocks, 4982 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4969 ConstructedInterpolants, 0 QuantifiedInterpolants, 17554702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 3059/5685 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown