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/Problem19_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:16:48,092 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:16:48,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:16:48,116 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:16:48,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:16:48,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:16:48,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:16:48,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:16:48,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:16:48,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:16:48,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:16:48,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:16:48,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:16:48,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:16:48,131 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:16:48,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:16:48,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:16:48,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:16:48,137 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:16:48,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:16:48,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:16:48,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:16:48,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:16:48,151 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 02:16:48,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:16:48,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:16:48,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:16:48,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:16:48,172 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:16:48,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:16:48,172 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:16:48,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:16:48,173 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:16:48,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:16:48,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:16:48,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:16:48,174 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:16:48,174 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:16:48,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:16:48,176 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:16:48,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:16:48,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:16:48,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:16:48,178 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:16:48,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:16:48,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:16:48,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:16:48,179 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:16:48,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:16:48,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:16:48,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:16:48,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:16:48,180 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:16:48,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:16:48,180 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:16:48,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:16:48,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:16:48,181 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:16:48,181 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:16:48,181 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:16:48,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:16:48,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:16:48,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:16:48,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:16:48,251 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:16:48,251 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label52_true-unreach-call.c [2018-10-25 02:16:48,308 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21d601838/ebd5d0047bd84a27a3c6d14475bfb10f/FLAGa219552df [2018-10-25 02:16:49,217 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:16:49,219 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label52_true-unreach-call.c [2018-10-25 02:16:49,269 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21d601838/ebd5d0047bd84a27a3c6d14475bfb10f/FLAGa219552df [2018-10-25 02:16:49,284 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21d601838/ebd5d0047bd84a27a3c6d14475bfb10f [2018-10-25 02:16:49,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:16:49,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:16:49,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:16:49,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:16:49,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:16:49,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:16:49" (1/1) ... [2018-10-25 02:16:49,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c383fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:49, skipping insertion in model container [2018-10-25 02:16:49,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:16:49" (1/1) ... [2018-10-25 02:16:49,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:16:49,592 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:16:51,623 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:16:51,628 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:16:52,816 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:16:52,878 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:16:52,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52 WrapperNode [2018-10-25 02:16:52,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:16:52,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:16:52,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:16:52,881 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:16:52,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:52,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:53,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:16:53,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:16:53,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:16:53,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:16:53,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:53,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:53,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:53,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:53,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:54,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:54,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (1/1) ... [2018-10-25 02:16:54,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:16:54,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:16:54,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:16:54,322 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:16:54,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (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 02:16:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:16:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:16:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:16:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:16:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:16:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:16:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:16:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:16:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:16:54,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:16:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:16:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:16:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:16:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:17:16,732 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:17:16,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:17:16 BoogieIcfgContainer [2018-10-25 02:17:16,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:17:16,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:17:16,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:17:16,738 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:17:16,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:16:49" (1/3) ... [2018-10-25 02:17:16,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429ef929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:17:16, skipping insertion in model container [2018-10-25 02:17:16,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:16:52" (2/3) ... [2018-10-25 02:17:16,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429ef929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:17:16, skipping insertion in model container [2018-10-25 02:17:16,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:17:16" (3/3) ... [2018-10-25 02:17:16,741 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label52_true-unreach-call.c [2018-10-25 02:17:16,750 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:17:16,760 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:17:16,778 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:17:16,833 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:17:16,833 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:17:16,833 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:17:16,834 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:17:16,834 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:17:16,834 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:17:16,834 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:17:16,834 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:17:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:17:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-25 02:17:16,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:16,902 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:17:16,905 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:16,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:16,911 INFO L82 PathProgramCache]: Analyzing trace with hash 286172164, now seen corresponding path program 1 times [2018-10-25 02:17:16,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:16,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:16,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:16,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:17,455 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:17:17,577 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 02:17:17,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:17,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:17:17,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:17,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:17:17,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:17:17,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:17:17,610 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-25 02:17:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:17:36,065 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-25 02:17:36,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:17:36,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-10-25 02:17:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:17:36,118 INFO L225 Difference]: With dead ends: 4998 [2018-10-25 02:17:36,118 INFO L226 Difference]: Without dead ends: 3218 [2018-10-25 02:17:36,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:17:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-25 02:17:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-25 02:17:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-25 02:17:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-25 02:17:36,361 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 62 [2018-10-25 02:17:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:17:36,362 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-25 02:17:36,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:17:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-25 02:17:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-25 02:17:36,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:17:36,376 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 02:17:36,376 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:17:36,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:17:36,377 INFO L82 PathProgramCache]: Analyzing trace with hash 455722041, now seen corresponding path program 1 times [2018-10-25 02:17:36,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:17:36,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:36,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:17:36,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:17:36,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:17:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:17:36,742 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:17:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:17:37,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:17:37,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:17:37,118 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:17:37,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:17:37,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:17:37,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:17:37,120 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-25 02:18:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:07,643 INFO L93 Difference]: Finished difference Result 10744 states and 19770 transitions. [2018-10-25 02:18:07,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:18:07,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-25 02:18:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:07,685 INFO L225 Difference]: With dead ends: 10744 [2018-10-25 02:18:07,685 INFO L226 Difference]: Without dead ends: 7535 [2018-10-25 02:18:07,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:18:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-25 02:18:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7498. [2018-10-25 02:18:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7498 states. [2018-10-25 02:18:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12452 transitions. [2018-10-25 02:18:07,932 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12452 transitions. Word has length 134 [2018-10-25 02:18:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:07,933 INFO L481 AbstractCegarLoop]: Abstraction has 7498 states and 12452 transitions. [2018-10-25 02:18:07,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:18:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12452 transitions. [2018-10-25 02:18:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-25 02:18:07,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:07,938 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 02:18:07,938 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:07,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1452331278, now seen corresponding path program 1 times [2018-10-25 02:18:07,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:07,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:07,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:07,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:07,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:08,268 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:18:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:08,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:08,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:18:08,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:08,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:18:08,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:18:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:18:08,346 INFO L87 Difference]: Start difference. First operand 7498 states and 12452 transitions. Second operand 6 states. [2018-10-25 02:18:35,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:35,077 INFO L93 Difference]: Finished difference Result 23917 states and 40036 transitions. [2018-10-25 02:18:35,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:18:35,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-25 02:18:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:35,148 INFO L225 Difference]: With dead ends: 23917 [2018-10-25 02:18:35,148 INFO L226 Difference]: Without dead ends: 16425 [2018-10-25 02:18:35,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:18:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16425 states. [2018-10-25 02:18:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 16242. [2018-10-25 02:18:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16242 states. [2018-10-25 02:18:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16242 states to 16242 states and 25372 transitions. [2018-10-25 02:18:35,517 INFO L78 Accepts]: Start accepts. Automaton has 16242 states and 25372 transitions. Word has length 136 [2018-10-25 02:18:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:35,517 INFO L481 AbstractCegarLoop]: Abstraction has 16242 states and 25372 transitions. [2018-10-25 02:18:35,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:18:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 16242 states and 25372 transitions. [2018-10-25 02:18:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-25 02:18:35,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:35,522 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:35,522 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:35,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash -724154579, now seen corresponding path program 1 times [2018-10-25 02:18:35,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:35,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:35,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:35,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:35,524 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:35,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:35,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:18:35,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:35,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:18:35,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:18:35,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:18:35,858 INFO L87 Difference]: Start difference. First operand 16242 states and 25372 transitions. Second operand 6 states. [2018-10-25 02:19:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:19:22,180 INFO L93 Difference]: Finished difference Result 61556 states and 99835 transitions. [2018-10-25 02:19:22,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:19:22,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-25 02:19:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:19:22,402 INFO L225 Difference]: With dead ends: 61556 [2018-10-25 02:19:22,402 INFO L226 Difference]: Without dead ends: 45320 [2018-10-25 02:19:22,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:19:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45320 states. [2018-10-25 02:19:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45320 to 45222. [2018-10-25 02:19:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45222 states. [2018-10-25 02:19:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45222 states to 45222 states and 66674 transitions. [2018-10-25 02:19:23,483 INFO L78 Accepts]: Start accepts. Automaton has 45222 states and 66674 transitions. Word has length 158 [2018-10-25 02:19:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:19:23,484 INFO L481 AbstractCegarLoop]: Abstraction has 45222 states and 66674 transitions. [2018-10-25 02:19:23,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:19:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 45222 states and 66674 transitions. [2018-10-25 02:19:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-25 02:19:23,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:19:23,489 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:23,489 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:19:23,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash 491943707, now seen corresponding path program 1 times [2018-10-25 02:19:23,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:19:23,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:19:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:23,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:19:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:19:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:19:23,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:19:23,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:19:23,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:19:23,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:19:23,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:19:23,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:19:23,798 INFO L87 Difference]: Start difference. First operand 45222 states and 66674 transitions. Second operand 5 states. [2018-10-25 02:19:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:19:53,443 INFO L93 Difference]: Finished difference Result 135612 states and 211871 transitions. [2018-10-25 02:19:53,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:19:53,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2018-10-25 02:19:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:19:53,810 INFO L225 Difference]: With dead ends: 135612 [2018-10-25 02:19:53,811 INFO L226 Difference]: Without dead ends: 90396 [2018-10-25 02:19:53,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:19:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90396 states. [2018-10-25 02:19:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90396 to 89670. [2018-10-25 02:19:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89670 states. [2018-10-25 02:19:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89670 states to 89670 states and 124669 transitions. [2018-10-25 02:19:56,594 INFO L78 Accepts]: Start accepts. Automaton has 89670 states and 124669 transitions. Word has length 167 [2018-10-25 02:19:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:19:56,594 INFO L481 AbstractCegarLoop]: Abstraction has 89670 states and 124669 transitions. [2018-10-25 02:19:56,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:19:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 89670 states and 124669 transitions. [2018-10-25 02:19:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-25 02:19:56,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:19:56,603 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:56,604 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:19:56,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:19:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1494786500, now seen corresponding path program 1 times [2018-10-25 02:19:56,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:19:56,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:56,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:19:56,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:19:56,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:19:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:19:56,906 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:19:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:19:57,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:19:57,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:19:57,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:19:57,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:19:57,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:19:57,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:19:57,325 INFO L87 Difference]: Start difference. First operand 89670 states and 124669 transitions. Second operand 6 states. [2018-10-25 02:20:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:20:21,625 INFO L93 Difference]: Finished difference Result 213806 states and 315918 transitions. [2018-10-25 02:20:21,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:20:21,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-25 02:20:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:20:22,028 INFO L225 Difference]: With dead ends: 213806 [2018-10-25 02:20:22,029 INFO L226 Difference]: Without dead ends: 124142 [2018-10-25 02:20:22,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:20:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124142 states. [2018-10-25 02:20:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124142 to 123782. [2018-10-25 02:20:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123782 states. [2018-10-25 02:20:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123782 states to 123782 states and 169777 transitions. [2018-10-25 02:20:25,375 INFO L78 Accepts]: Start accepts. Automaton has 123782 states and 169777 transitions. Word has length 195 [2018-10-25 02:20:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:20:25,376 INFO L481 AbstractCegarLoop]: Abstraction has 123782 states and 169777 transitions. [2018-10-25 02:20:25,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:20:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 123782 states and 169777 transitions. [2018-10-25 02:20:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-25 02:20:25,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:20:25,397 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:20:25,397 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:20:25,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:20:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash -272986980, now seen corresponding path program 1 times [2018-10-25 02:20:25,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:20:25,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:20:25,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:20:25,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:20:25,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:20:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:20:25,665 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:20:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:20:26,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:20:26,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:20:26,063 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-25 02:20:26,068 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5622], [5624], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:20:26,138 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:20:26,139 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:20:26,699 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:20:26,701 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:20:26,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:20:26,739 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:20:27,313 INFO L232 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 75.79% of their original sizes. [2018-10-25 02:20:27,313 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:20:27,559 INFO L413 sIntCurrentIteration]: We have 232 unified AI predicates [2018-10-25 02:20:27,559 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:20:27,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:20:27,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:20:27,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:20:27,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:20:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:20:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:20:27,566 INFO L87 Difference]: Start difference. First operand 123782 states and 169777 transitions. Second operand 6 states. Received shutdown request... [2018-10-25 02:20:36,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:20:36,760 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:20:36,766 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:20:36,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:20:36 BoogieIcfgContainer [2018-10-25 02:20:36,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:20:36,768 INFO L168 Benchmark]: Toolchain (without parser) took 227471.39 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 57.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,769 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:20:36,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3578.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.4 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 804.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 995.4 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,776 INFO L168 Benchmark]: Boogie Preprocessor took 636.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,780 INFO L168 Benchmark]: RCFGBuilder took 22411.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.5 MB). Peak memory consumption was 680.7 MB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,781 INFO L168 Benchmark]: TraceAbstraction took 200032.95 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 357.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 02:20:36,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 3578.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.4 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 804.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 995.4 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 636.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 22411.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.5 MB). Peak memory consumption was 680.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200032.95 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 357.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (123782states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (6602 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 199.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 186.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3676 SDtfs, 41010 SDslu, 4117 SDs, 0 SdLazy, 65000 SolverSat, 15962 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 155.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 285 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123782occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9979612466494029 AbsIntWeakeningRatio, 0.1206896551724138 AbsIntAvgWeakeningVarsNumRemoved, 17.267241379310345 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 1407 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1085 NumberOfCodeBlocks, 1085 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1078 ConstructedInterpolants, 0 QuantifiedInterpolants, 711878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 390/455 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown