java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:18:02,293 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:18:02,295 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:18:02,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:18:02,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:18:02,319 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:18:02,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:18:02,328 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:18:02,331 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:18:02,335 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:18:02,336 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:18:02,336 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:18:02,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:18:02,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:18:02,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:18:02,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:18:02,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:18:02,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:18:02,348 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:18:02,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:18:02,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:18:02,353 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:18:02,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:18:02,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:18:02,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:18:02,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:18:02,361 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:18:02,362 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:18:02,363 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:18:02,364 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:18:02,364 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:18:02,365 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 00:18:02,367 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:18:02,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:18:02,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:18:02,384 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:18:02,384 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:18:02,384 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:18:02,385 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:18:02,385 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:18:02,385 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:18:02,385 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:18:02,385 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:18:02,386 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:18:02,386 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:18:02,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:18:02,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:18:02,387 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:18:02,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:18:02,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:18:02,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:18:02,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:18:02,388 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:18:02,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:18:02,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:18:02,389 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:18:02,389 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:18:02,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:18:02,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:18:02,390 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:18:02,390 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:18:02,390 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:18:02,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:18:02,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:18:02,391 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:18:02,391 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:18:02,391 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:18:02,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:18:02,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:18:02,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:18:02,459 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:18:02,459 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:18:02,460 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 00:18:02,533 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e9f6abe/5250e3c2ecac4983bfa10c472be4e13b/FLAGd17dbc0f9 [2018-11-07 00:18:03,166 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:18:03,167 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 00:18:03,181 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e9f6abe/5250e3c2ecac4983bfa10c472be4e13b/FLAGd17dbc0f9 [2018-11-07 00:18:03,195 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e9f6abe/5250e3c2ecac4983bfa10c472be4e13b [2018-11-07 00:18:03,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:18:03,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:18:03,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:18:03,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:18:03,213 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:18:03,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:03" (1/1) ... [2018-11-07 00:18:03,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f80c201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:03, skipping insertion in model container [2018-11-07 00:18:03,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:03" (1/1) ... [2018-11-07 00:18:03,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:18:03,291 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:18:03,866 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:18:03,871 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:18:04,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:18:04,041 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:18:04,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04 WrapperNode [2018-11-07 00:18:04,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:18:04,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:18:04,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:18:04,043 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:18:04,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:18:04,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:18:04,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:18:04,188 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:18:04,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... [2018-11-07 00:18:04,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:18:04,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:18:04,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:18:04,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:18:04,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:18:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:18:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:18:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:18:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:18:07,753 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:18:07,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:07 BoogieIcfgContainer [2018-11-07 00:18:07,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:18:07,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:18:07,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:18:07,759 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:18:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:18:03" (1/3) ... [2018-11-07 00:18:07,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466ad28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:07, skipping insertion in model container [2018-11-07 00:18:07,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:04" (2/3) ... [2018-11-07 00:18:07,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466ad28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:07, skipping insertion in model container [2018-11-07 00:18:07,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:07" (3/3) ... [2018-11-07 00:18:07,764 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 00:18:07,775 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:18:07,785 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:18:07,803 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:18:07,843 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:18:07,843 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:18:07,844 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:18:07,844 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:18:07,844 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:18:07,844 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:18:07,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:18:07,845 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:18:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:18:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 00:18:07,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:07,884 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] [2018-11-07 00:18:07,887 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:07,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1296810127, now seen corresponding path program 1 times [2018-11-07 00:18:07,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:07,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:07,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:07,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:07,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:08,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:18:08,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:18:08,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:08,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:18:08,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:18:08,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:18:08,236 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 00:18:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:11,143 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 00:18:11,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:18:11,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-07 00:18:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:11,169 INFO L225 Difference]: With dead ends: 894 [2018-11-07 00:18:11,170 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 00:18:11,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:18:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 00:18:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 00:18:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 00:18:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 00:18:11,298 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 23 [2018-11-07 00:18:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:11,299 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 00:18:11,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:18:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 00:18:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 00:18:11,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:11,308 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:18:11,308 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:11,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:11,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1722550117, now seen corresponding path program 1 times [2018-11-07 00:18:11,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:11,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:11,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:11,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:11,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:11,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:18:11,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:18:11,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:11,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:18:11,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:18:11,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:18:11,741 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 00:18:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:14,781 INFO L93 Difference]: Finished difference Result 2170 states and 3490 transitions. [2018-11-07 00:18:14,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:18:14,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-11-07 00:18:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:14,795 INFO L225 Difference]: With dead ends: 2170 [2018-11-07 00:18:14,795 INFO L226 Difference]: Without dead ends: 1543 [2018-11-07 00:18:14,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:18:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-11-07 00:18:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-11-07 00:18:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-11-07 00:18:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2271 transitions. [2018-11-07 00:18:14,887 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2271 transitions. Word has length 136 [2018-11-07 00:18:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:14,888 INFO L480 AbstractCegarLoop]: Abstraction has 1543 states and 2271 transitions. [2018-11-07 00:18:14,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:18:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2271 transitions. [2018-11-07 00:18:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 00:18:14,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:14,899 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:18:14,899 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:14,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1034192261, now seen corresponding path program 1 times [2018-11-07 00:18:14,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:14,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:15,367 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 00:18:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:18:15,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:18:15,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:18:15,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-11-07 00:18:15,661 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:18:15,737 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:18:15,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:18:18,396 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:18:21,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:18:21,072 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:18:21,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:21,118 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:18:23,512 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-07 00:18:23,512 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:23,920 INFO L415 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2018-11-07 00:18:23,920 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:23,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:23,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 00:18:23,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:23,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:18:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:18:23,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:18:23,923 INFO L87 Difference]: Start difference. First operand 1543 states and 2271 transitions. Second operand 7 states. [2018-11-07 00:18:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:51,707 INFO L93 Difference]: Finished difference Result 3265 states and 4776 transitions. [2018-11-07 00:18:51,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:18:51,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-11-07 00:18:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:51,717 INFO L225 Difference]: With dead ends: 3265 [2018-11-07 00:18:51,717 INFO L226 Difference]: Without dead ends: 1728 [2018-11-07 00:18:51,722 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:18:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-11-07 00:18:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-11-07 00:18:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-11-07 00:18:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2461 transitions. [2018-11-07 00:18:51,774 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2461 transitions. Word has length 211 [2018-11-07 00:18:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:51,775 INFO L480 AbstractCegarLoop]: Abstraction has 1726 states and 2461 transitions. [2018-11-07 00:18:51,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:18:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2461 transitions. [2018-11-07 00:18:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 00:18:51,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:51,783 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:18:51,784 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:51,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash 931255223, now seen corresponding path program 1 times [2018-11-07 00:18:51,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:51,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:51,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:52,255 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:18:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 136 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:18:52,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:18:52,823 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:18:52,823 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 00:18:52,824 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:18:52,830 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:18:52,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:18:54,734 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:18:58,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:18:58,860 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:18:58,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:58,894 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:19:01,849 INFO L227 lantSequenceWeakener]: Weakened 96 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 00:19:01,850 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:19:36,332 INFO L415 sIntCurrentIteration]: We unified 295 AI predicates to 295 [2018-11-07 00:19:36,332 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:19:36,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:19:36,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-07 00:19:36,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:19:36,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 00:19:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 00:19:36,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-07 00:19:36,336 INFO L87 Difference]: Start difference. First operand 1726 states and 2461 transitions. Second operand 20 states. [2018-11-07 00:21:55,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:55,393 INFO L93 Difference]: Finished difference Result 4027 states and 5711 transitions. [2018-11-07 00:21:55,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 00:21:55,393 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 296 [2018-11-07 00:21:55,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:55,407 INFO L225 Difference]: With dead ends: 4027 [2018-11-07 00:21:55,407 INFO L226 Difference]: Without dead ends: 2490 [2018-11-07 00:21:55,413 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 302 GetRequests, 237 SyntacticMatches, 40 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2018-11-07 00:21:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2018-11-07 00:21:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2452. [2018-11-07 00:21:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2018-11-07 00:21:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3229 transitions. [2018-11-07 00:21:55,611 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3229 transitions. Word has length 296 [2018-11-07 00:21:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:55,612 INFO L480 AbstractCegarLoop]: Abstraction has 2452 states and 3229 transitions. [2018-11-07 00:21:55,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 00:21:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3229 transitions. [2018-11-07 00:21:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-11-07 00:21:55,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:55,621 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:21:55,622 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:55,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:55,622 INFO L82 PathProgramCache]: Analyzing trace with hash 57910923, now seen corresponding path program 1 times [2018-11-07 00:21:55,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:55,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:55,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:55,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:55,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:56,149 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:21:56,359 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:21:56,579 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:21:56,945 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 00:21:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 61 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:21:57,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:57,559 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:57,559 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 323 with the following transitions: [2018-11-07 00:21:57,560 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:57,564 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:57,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:21:59,310 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 00:22:01,186 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 00:22:01,187 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 00:22:01,188 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 00:22:01,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:22:01,188 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:22:01,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:22:01,198 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:22:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:22:01,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:22:01,333 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 00:22:01,535 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:22:01,536 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:22:01,541 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:22:01,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:22:01 BoogieIcfgContainer [2018-11-07 00:22:01,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:22:01,542 INFO L168 Benchmark]: Toolchain (without parser) took 238334.90 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 723.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:01,543 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:22:01,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:01,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:01,545 INFO L168 Benchmark]: Boogie Preprocessor took 128.79 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:22:01,546 INFO L168 Benchmark]: RCFGBuilder took 3438.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:01,547 INFO L168 Benchmark]: TraceAbstraction took 233785.38 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 644.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:01,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 144.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.79 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3438.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233785.38 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 644.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was analyzing trace of length 323 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 233.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 172.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 801 SDtfs, 3593 SDslu, 782 SDs, 0 SdLazy, 5392 SolverSat, 935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 524 GetRequests, 449 SyntacticMatches, 40 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 36.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2452occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.1s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9951607117233461 AbsIntWeakeningRatio, 0.11485148514851486 AbsIntAvgWeakeningVarsNumRemoved, 583.6217821782178 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 666 NumberOfCodeBlocks, 666 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 1846257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 194/406 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown