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/Problem03_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:21:26,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:21:26,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:21:26,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:21:26,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:21:26,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:21:26,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:21:26,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:21:26,214 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:21:26,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:21:26,216 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:21:26,216 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:21:26,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:21:26,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:21:26,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:21:26,220 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:21:26,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:21:26,223 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:21:26,225 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:21:26,227 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:21:26,231 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:21:26,234 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:21:26,238 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:21:26,252 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 00:21:26,274 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:21:26,275 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:21:26,275 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:21:26,276 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:21:26,276 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:21:26,276 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:21:26,276 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:21:26,276 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:21:26,277 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:21:26,278 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:21:26,278 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:21:26,279 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:21:26,280 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:21:26,280 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:21:26,280 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:21:26,280 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:21:26,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:21:26,281 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:21:26,281 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:21:26,281 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:21:26,281 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:21:26,281 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:21:26,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:21:26,282 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:21:26,282 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:21:26,282 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:21:26,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:21:26,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:21:26,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:21:26,358 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:21:26,359 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:21:26,360 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-10-25 00:21:26,439 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2639e9f5f/78f7de53ca29431eb41ed3164ba9d6e6/FLAG9e80f11bd [2018-10-25 00:21:27,052 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:21:27,053 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-10-25 00:21:27,070 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2639e9f5f/78f7de53ca29431eb41ed3164ba9d6e6/FLAG9e80f11bd [2018-10-25 00:21:27,086 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2639e9f5f/78f7de53ca29431eb41ed3164ba9d6e6 [2018-10-25 00:21:27,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:21:27,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:21:27,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:21:27,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:21:27,104 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:21:27,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:21:27" (1/1) ... [2018-10-25 00:21:27,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:27, skipping insertion in model container [2018-10-25 00:21:27,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:21:27" (1/1) ... [2018-10-25 00:21:27,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:21:27,198 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:21:27,867 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:21:27,873 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:21:28,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:21:28,166 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:21:28,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28 WrapperNode [2018-10-25 00:21:28,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:21:28,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:21:28,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:21:28,170 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:21:28,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:21:28,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:21:28,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:21:28,488 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:21:28,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (1/1) ... [2018-10-25 00:21:28,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:21:28,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:21:28,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:21:28,610 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:21:28,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (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 00:21:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:21:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:21:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:21:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:21:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:21:28,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:21:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:21:28,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:21:34,192 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:21:34,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:21:34 BoogieIcfgContainer [2018-10-25 00:21:34,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:21:34,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:21:34,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:21:34,199 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:21:34,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:21:27" (1/3) ... [2018-10-25 00:21:34,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:21:34, skipping insertion in model container [2018-10-25 00:21:34,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:21:28" (2/3) ... [2018-10-25 00:21:34,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:21:34, skipping insertion in model container [2018-10-25 00:21:34,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:21:34" (3/3) ... [2018-10-25 00:21:34,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label59_true-unreach-call.c [2018-10-25 00:21:34,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:21:34,231 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:21:34,249 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:21:34,291 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:21:34,291 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:21:34,291 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:21:34,292 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:21:34,292 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:21:34,292 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:21:34,292 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:21:34,292 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:21:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:21:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-25 00:21:34,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:34,346 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:34,349 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:34,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -209089196, now seen corresponding path program 1 times [2018-10-25 00:21:34,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:34,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:34,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:34,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:35,545 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 00:21:35,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:35,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:21:35,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:35,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:21:35,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:21:35,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:21:35,574 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:21:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:38,856 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-10-25 00:21:38,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:21:38,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-25 00:21:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:38,887 INFO L225 Difference]: With dead ends: 1084 [2018-10-25 00:21:38,887 INFO L226 Difference]: Without dead ends: 766 [2018-10-25 00:21:38,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:21:38,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-10-25 00:21:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-10-25 00:21:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-25 00:21:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-10-25 00:21:39,005 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 181 [2018-10-25 00:21:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:39,006 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-10-25 00:21:39,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:21:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-10-25 00:21:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-25 00:21:39,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:39,025 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:39,026 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:39,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash -588288187, now seen corresponding path program 1 times [2018-10-25 00:21:39,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:39,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:39,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:39,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:39,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:39,367 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:21:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:39,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:39,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:21:39,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:39,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:21:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:21:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:21:39,619 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-10-25 00:21:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:42,862 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-10-25 00:21:42,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:21:42,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-10-25 00:21:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:42,875 INFO L225 Difference]: With dead ends: 1614 [2018-10-25 00:21:42,876 INFO L226 Difference]: Without dead ends: 1096 [2018-10-25 00:21:42,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:21:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-25 00:21:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-25 00:21:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-25 00:21:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-10-25 00:21:42,967 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 192 [2018-10-25 00:21:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:42,968 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-10-25 00:21:42,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:21:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-10-25 00:21:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-25 00:21:42,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:42,976 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:42,977 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:42,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1719938640, now seen corresponding path program 1 times [2018-10-25 00:21:42,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:42,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:42,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:42,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:42,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:21:43,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:21:43,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:21:43,319 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:43,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:21:43,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:21:43,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:21:43,322 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-10-25 00:21:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:45,748 INFO L93 Difference]: Finished difference Result 3104 states and 5262 transitions. [2018-10-25 00:21:45,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:21:45,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-10-25 00:21:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:45,770 INFO L225 Difference]: With dead ends: 3104 [2018-10-25 00:21:45,770 INFO L226 Difference]: Without dead ends: 2037 [2018-10-25 00:21:45,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:21:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2018-10-25 00:21:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2030. [2018-10-25 00:21:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-10-25 00:21:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3225 transitions. [2018-10-25 00:21:45,862 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3225 transitions. Word has length 194 [2018-10-25 00:21:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:45,863 INFO L481 AbstractCegarLoop]: Abstraction has 2030 states and 3225 transitions. [2018-10-25 00:21:45,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:21:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3225 transitions. [2018-10-25 00:21:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-25 00:21:45,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:45,872 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:21:45,873 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:45,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash 284836524, now seen corresponding path program 1 times [2018-10-25 00:21:45,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:45,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:45,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:45,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:45,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:46,134 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:21:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:21:46,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:46,431 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:46,432 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-25 00:21:46,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:46,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:46,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:47,808 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:21:47,810 INFO L272 AbstractInterpreter]: Visited 182 different actions 182 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:21:47,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:47,851 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:21:48,927 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 73.01% of their original sizes. [2018-10-25 00:21:48,928 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:21:50,946 INFO L413 sIntCurrentIteration]: We have 201 unified AI predicates [2018-10-25 00:21:50,947 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:21:50,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:21:50,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-25 00:21:50,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:21:50,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-25 00:21:50,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-25 00:21:50,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-10-25 00:21:50,951 INFO L87 Difference]: Start difference. First operand 2030 states and 3225 transitions. Second operand 19 states. [2018-10-25 00:23:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:23:27,221 INFO L93 Difference]: Finished difference Result 4264 states and 6779 transitions. [2018-10-25 00:23:27,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:23:27,221 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 202 [2018-10-25 00:23:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:23:27,234 INFO L225 Difference]: With dead ends: 4264 [2018-10-25 00:23:27,234 INFO L226 Difference]: Without dead ends: 2240 [2018-10-25 00:23:27,241 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:23:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2018-10-25 00:23:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2238. [2018-10-25 00:23:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2018-10-25 00:23:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3442 transitions. [2018-10-25 00:23:27,304 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3442 transitions. Word has length 202 [2018-10-25 00:23:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:23:27,304 INFO L481 AbstractCegarLoop]: Abstraction has 2238 states and 3442 transitions. [2018-10-25 00:23:27,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-25 00:23:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3442 transitions. [2018-10-25 00:23:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-25 00:23:27,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:23:27,313 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:23:27,313 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:23:27,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash -576572177, now seen corresponding path program 1 times [2018-10-25 00:23:27,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:23:27,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:27,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:23:27,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:23:27,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:23:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:23:27,577 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:23:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:23:28,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:23:28,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:23:28,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-25 00:23:28,509 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:23:28,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:23:28,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:23:29,803 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:23:29,804 INFO L272 AbstractInterpreter]: Visited 186 different actions 366 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:23:29,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:23:29,816 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:23:31,536 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 72.87% of their original sizes. [2018-10-25 00:23:31,537 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:23:32,390 INFO L413 sIntCurrentIteration]: We have 213 unified AI predicates [2018-10-25 00:23:32,391 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:23:32,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:23:32,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [9] total 33 [2018-10-25 00:23:32,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:23:32,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-25 00:23:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-25 00:23:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2018-10-25 00:23:32,395 INFO L87 Difference]: Start difference. First operand 2238 states and 3442 transitions. Second operand 26 states. [2018-10-25 00:25:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:25:19,781 INFO L93 Difference]: Finished difference Result 4476 states and 7003 transitions. [2018-10-25 00:25:19,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:25:19,781 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 214 [2018-10-25 00:25:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:25:19,794 INFO L225 Difference]: With dead ends: 4476 [2018-10-25 00:25:19,795 INFO L226 Difference]: Without dead ends: 2452 [2018-10-25 00:25:19,802 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2018-10-25 00:25:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2018-10-25 00:25:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2449. [2018-10-25 00:25:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2018-10-25 00:25:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3670 transitions. [2018-10-25 00:25:19,865 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3670 transitions. Word has length 214 [2018-10-25 00:25:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:25:19,865 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 3670 transitions. [2018-10-25 00:25:19,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-25 00:25:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3670 transitions. [2018-10-25 00:25:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-25 00:25:19,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:25:19,874 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:25:19,875 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:25:19,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:25:19,875 INFO L82 PathProgramCache]: Analyzing trace with hash 139297364, now seen corresponding path program 1 times [2018-10-25 00:25:19,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:25:19,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:19,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:19,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:19,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:25:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:25:20,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:25:20,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:25:20,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-25 00:25:20,171 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:25:20,179 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:25:20,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:25:25,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:25:25,019 INFO L272 AbstractInterpreter]: Visited 188 different actions 558 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:25:25,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:25:25,025 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:25:25,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:25:25,026 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 00:25:25,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:25,034 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:25:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:25,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:25:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:25:25,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:25:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:25:26,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:25:26,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-25 00:25:26,462 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:25:26,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:25:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:25:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:25:26,463 INFO L87 Difference]: Start difference. First operand 2449 states and 3670 transitions. Second operand 8 states. [2018-10-25 00:25:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:25:30,994 INFO L93 Difference]: Finished difference Result 8331 states and 15541 transitions. [2018-10-25 00:25:31,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:25:31,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2018-10-25 00:25:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:25:31,056 INFO L225 Difference]: With dead ends: 8331 [2018-10-25 00:25:31,056 INFO L226 Difference]: Without dead ends: 6307 [2018-10-25 00:25:31,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:25:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2018-10-25 00:25:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6186. [2018-10-25 00:25:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6186 states. [2018-10-25 00:25:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 9953 transitions. [2018-10-25 00:25:31,335 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 9953 transitions. Word has length 214 [2018-10-25 00:25:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:25:31,335 INFO L481 AbstractCegarLoop]: Abstraction has 6186 states and 9953 transitions. [2018-10-25 00:25:31,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:25:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 9953 transitions. [2018-10-25 00:25:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-25 00:25:31,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:25:31,363 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:31,364 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:25:31,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:25:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1069054914, now seen corresponding path program 1 times [2018-10-25 00:25:31,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:25:31,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:31,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:31,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:25:31,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:25:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 00:25:31,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:25:31,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:25:31,933 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-25 00:25:31,934 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:25:31,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:25:31,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 00:25:32,452 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 00:25:32,453 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 00:25:32,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 00:25:32,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:25:32,453 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:25:32,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:25:32,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:25:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:25:32,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:25:32,720 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 00:25:32,921 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:25:32,922 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:25:32,928 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:25:32,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:25:32 BoogieIcfgContainer [2018-10-25 00:25:32,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:25:32,930 INFO L168 Benchmark]: Toolchain (without parser) took 245832.57 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -689.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,931 INFO L168 Benchmark]: CDTParser took 0.20 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 00:25:32,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1069.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,933 INFO L168 Benchmark]: Boogie Preprocessor took 121.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,934 INFO L168 Benchmark]: RCFGBuilder took 5583.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.0 MB). Peak memory consumption was 261.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,936 INFO L168 Benchmark]: TraceAbstraction took 238734.10 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:25:32,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1069.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 317.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5583.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.0 MB). Peak memory consumption was 261.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238734.10 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -168.8 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: 1557]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1557). Cancelled while BasicCegarLoop was analyzing trace of length 240 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 238.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 217.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1600 SDtfs, 7967 SDslu, 3115 SDs, 0 SdLazy, 17374 SolverSat, 1687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 885 GetRequests, 810 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6186occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.1s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9989567644249886 AbsIntWeakeningRatio, 0.34057971014492755 AbsIntAvgWeakeningVarsNumRemoved, 29.14009661835749 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 398 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1411 NumberOfCodeBlocks, 1411 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1617 ConstructedInterpolants, 0 QuantifiedInterpolants, 702950 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1036 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 163/190 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown