java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:33:50,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:33:50,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:33:50,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:33:50,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:33:50,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:33:50,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:33:50,076 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:33:50,078 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:33:50,079 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:33:50,080 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:33:50,080 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:33:50,081 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:33:50,082 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:33:50,083 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:33:50,084 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:33:50,085 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:33:50,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:33:50,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:33:50,092 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:33:50,093 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:33:50,094 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:33:50,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:33:50,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:33:50,098 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:33:50,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:33:50,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:33:50,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:33:50,101 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:33:50,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:33:50,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:33:50,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:33:50,107 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:33:50,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:33:50,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:33:50,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:33:50,124 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:33:50,125 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:33:50,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:33:50,125 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:33:50,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:33:50,126 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:33:50,126 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:33:50,126 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:33:50,126 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:33:50,127 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:33:50,127 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:33:50,128 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:33:50,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:33:50,128 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:33:50,128 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:33:50,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:33:50,129 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:33:50,129 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:33:50,129 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:33:50,129 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:33:50,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:33:50,130 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:33:50,130 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:33:50,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:33:50,130 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:33:50,131 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:33:50,131 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:33:50,131 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:33:50,131 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:33:50,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:33:50,132 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:33:50,132 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:33:50,132 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:33:50,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:33:50,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:33:50,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:33:50,212 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:33:50,213 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:33:50,215 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-10-25 01:33:50,279 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fd5fb3b4/ddb2013f2c07400aac7bbd9880650422/FLAGad7c88032 [2018-10-25 01:33:50,915 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:33:50,918 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-10-25 01:33:50,936 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fd5fb3b4/ddb2013f2c07400aac7bbd9880650422/FLAGad7c88032 [2018-10-25 01:33:50,959 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fd5fb3b4/ddb2013f2c07400aac7bbd9880650422 [2018-10-25 01:33:50,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:33:50,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:33:50,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:33:50,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:33:50,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:33:50,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:33:50" (1/1) ... [2018-10-25 01:33:50,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:50, skipping insertion in model container [2018-10-25 01:33:50,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:33:50" (1/1) ... [2018-10-25 01:33:51,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:33:51,083 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:33:51,682 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:33:51,692 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:33:51,909 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:33:51,931 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:33:51,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51 WrapperNode [2018-10-25 01:33:51,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:33:51,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:33:51,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:33:51,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:33:51,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:51,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:33:52,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:33:52,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:33:52,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:33:52,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... [2018-10-25 01:33:52,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:33:52,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:33:52,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:33:52,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:33:52,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:33:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:33:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:33:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:33:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:33:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:33:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:33:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:33:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:33:57,116 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:33:57,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:33:57 BoogieIcfgContainer [2018-10-25 01:33:57,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:33:57,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:33:57,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:33:57,124 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:33:57,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:33:50" (1/3) ... [2018-10-25 01:33:57,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2cd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:33:57, skipping insertion in model container [2018-10-25 01:33:57,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:51" (2/3) ... [2018-10-25 01:33:57,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2cd0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:33:57, skipping insertion in model container [2018-10-25 01:33:57,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:33:57" (3/3) ... [2018-10-25 01:33:57,130 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label52_true-unreach-call.c [2018-10-25 01:33:57,139 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:33:57,148 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:33:57,166 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:33:57,207 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:33:57,208 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:33:57,208 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:33:57,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:33:57,208 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:33:57,209 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:33:57,209 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:33:57,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:33:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:33:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-25 01:33:57,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:57,250 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:33:57,253 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:57,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -684847423, now seen corresponding path program 1 times [2018-10-25 01:33:57,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:57,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:57,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:57,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:57,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:57,761 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:33:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:57,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:57,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:33:57,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:57,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:33:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:33:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:33:57,928 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-25 01:34:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:00,097 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-10-25 01:34:00,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:34:00,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-25 01:34:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:00,120 INFO L225 Difference]: With dead ends: 790 [2018-10-25 01:34:00,121 INFO L226 Difference]: Without dead ends: 495 [2018-10-25 01:34:00,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:34:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-10-25 01:34:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-10-25 01:34:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-10-25 01:34:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-10-25 01:34:00,276 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 59 [2018-10-25 01:34:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:00,277 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-10-25 01:34:00,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:34:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-10-25 01:34:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-25 01:34:00,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:00,294 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:00,294 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:00,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash 788418208, now seen corresponding path program 1 times [2018-10-25 01:34:00,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:00,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:00,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:00,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:00,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:00,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:34:00,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:34:00,655 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:00,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:34:00,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:34:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:34:00,659 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-10-25 01:34:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:05,566 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-10-25 01:34:05,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:34:05,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-10-25 01:34:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:05,584 INFO L225 Difference]: With dead ends: 1731 [2018-10-25 01:34:05,584 INFO L226 Difference]: Without dead ends: 1249 [2018-10-25 01:34:05,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:34:05,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-10-25 01:34:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-10-25 01:34:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-10-25 01:34:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-10-25 01:34:05,662 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 135 [2018-10-25 01:34:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:05,663 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-10-25 01:34:05,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:34:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-10-25 01:34:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-25 01:34:05,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:05,668 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:05,668 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:05,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash 167245263, now seen corresponding path program 1 times [2018-10-25 01:34:05,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:05,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:05,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:05,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:05,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:05,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:34:05,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:34:05,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:05,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:34:05,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:34:05,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:34:05,866 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-10-25 01:34:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:09,986 INFO L93 Difference]: Finished difference Result 3666 states and 6091 transitions. [2018-10-25 01:34:09,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:34:09,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-25 01:34:09,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:10,016 INFO L225 Difference]: With dead ends: 3666 [2018-10-25 01:34:10,016 INFO L226 Difference]: Without dead ends: 2640 [2018-10-25 01:34:10,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:34:10,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2018-10-25 01:34:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2605. [2018-10-25 01:34:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-10-25 01:34:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3731 transitions. [2018-10-25 01:34:10,121 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3731 transitions. Word has length 146 [2018-10-25 01:34:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:10,121 INFO L481 AbstractCegarLoop]: Abstraction has 2605 states and 3731 transitions. [2018-10-25 01:34:10,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:34:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3731 transitions. [2018-10-25 01:34:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-25 01:34:10,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:10,131 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:10,131 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:10,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash 2059396069, now seen corresponding path program 1 times [2018-10-25 01:34:10,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:10,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:10,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:11,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:11,169 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:11,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-25 01:34:11,174 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], [337], [345], [353], [361], [369], [373], [375], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:11,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:11,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:12,973 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:34:12,975 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:34:13,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:13,021 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:34:13,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:13,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:13,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:13,035 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:13,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:13,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:34:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:13,898 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:34:13,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-25 01:34:13,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:13,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:34:13,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:34:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:34:13,900 INFO L87 Difference]: Start difference. First operand 2605 states and 3731 transitions. Second operand 3 states. [2018-10-25 01:34:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:16,576 INFO L93 Difference]: Finished difference Result 6000 states and 8839 transitions. [2018-10-25 01:34:16,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:34:16,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-10-25 01:34:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:16,594 INFO L225 Difference]: With dead ends: 6000 [2018-10-25 01:34:16,594 INFO L226 Difference]: Without dead ends: 3401 [2018-10-25 01:34:16,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 382 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:34:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-10-25 01:34:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3205. [2018-10-25 01:34:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2018-10-25 01:34:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4562 transitions. [2018-10-25 01:34:16,689 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4562 transitions. Word has length 191 [2018-10-25 01:34:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:16,690 INFO L481 AbstractCegarLoop]: Abstraction has 3205 states and 4562 transitions. [2018-10-25 01:34:16,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:34:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4562 transitions. [2018-10-25 01:34:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-25 01:34:16,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:16,697 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:16,698 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:16,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash -558733758, now seen corresponding path program 1 times [2018-10-25 01:34:16,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:16,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:16,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:16,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:16,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:16,964 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:34:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:34:17,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:17,234 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:17,234 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-25 01:34:17,235 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], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:17,239 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:17,239 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:17,498 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:34:17,499 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:34:17,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:17,537 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:34:18,119 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 73.74% of their original sizes. [2018-10-25 01:34:18,120 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:34:18,343 INFO L413 sIntCurrentIteration]: We have 215 unified AI predicates [2018-10-25 01:34:18,344 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:34:18,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:34:18,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:34:18,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:18,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:34:18,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:34:18,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:34:18,347 INFO L87 Difference]: Start difference. First operand 3205 states and 4562 transitions. Second operand 6 states. [2018-10-25 01:35:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:19,122 INFO L93 Difference]: Finished difference Result 6596 states and 9338 transitions. [2018-10-25 01:35:19,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:35:19,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-25 01:35:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:19,140 INFO L225 Difference]: With dead ends: 6596 [2018-10-25 01:35:19,140 INFO L226 Difference]: Without dead ends: 3397 [2018-10-25 01:35:19,149 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:35:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-10-25 01:35:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3395. [2018-10-25 01:35:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2018-10-25 01:35:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4761 transitions. [2018-10-25 01:35:19,225 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4761 transitions. Word has length 216 [2018-10-25 01:35:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:19,226 INFO L481 AbstractCegarLoop]: Abstraction has 3395 states and 4761 transitions. [2018-10-25 01:35:19,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:35:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4761 transitions. [2018-10-25 01:35:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-25 01:35:19,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:19,238 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:35:19,238 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:19,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1967452234, now seen corresponding path program 1 times [2018-10-25 01:35:19,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:19,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:19,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:19,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:19,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 232 proven. 72 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-25 01:35:19,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:19,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:19,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-25 01:35:19,567 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], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:19,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:19,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:20,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:35:20,068 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:35:20,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:20,178 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:35:21,267 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 74.04% of their original sizes. [2018-10-25 01:35:21,267 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:35:21,588 INFO L413 sIntCurrentIteration]: We have 332 unified AI predicates [2018-10-25 01:35:21,589 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:35:21,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:35:21,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-25 01:35:21,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:35:21,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:35:21,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:35:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:35:21,590 INFO L87 Difference]: Start difference. First operand 3395 states and 4761 transitions. Second operand 15 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown