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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:31:59,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:31:59,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:31:59,432 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:31:59,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:31:59,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:31:59,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:31:59,437 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:31:59,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:31:59,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:31:59,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:31:59,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:31:59,447 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:31:59,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:31:59,452 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:31:59,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:31:59,453 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:31:59,455 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:31:59,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:31:59,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:31:59,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:31:59,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:31:59,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:31:59,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:31:59,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:31:59,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:31:59,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:31:59,465 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:31:59,466 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:31:59,467 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:31:59,467 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:31:59,468 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:31:59,468 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:31:59,468 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:31:59,469 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:31:59,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:31:59,470 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:31:59,486 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:31:59,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:31:59,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:31:59,487 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:31:59,487 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:31:59,487 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:31:59,488 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:31:59,488 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:31:59,488 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:31:59,488 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:31:59,488 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:31:59,489 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:31:59,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:31:59,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:31:59,490 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:31:59,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:31:59,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:31:59,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:31:59,491 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:31:59,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:31:59,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:31:59,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:31:59,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:31:59,492 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:31:59,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:31:59,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:31:59,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:31:59,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:31:59,493 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:31:59,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:31:59,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:31:59,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:31:59,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:31:59,585 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:31:59,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label42_false-unreach-call.c [2018-10-26 23:31:59,644 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d587844cb/f6fb64abaf8649f1b9400daeba7b5c03/FLAG923cca0f0 [2018-10-26 23:32:00,161 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:32:00,162 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label42_false-unreach-call.c [2018-10-26 23:32:00,190 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d587844cb/f6fb64abaf8649f1b9400daeba7b5c03/FLAG923cca0f0 [2018-10-26 23:32:00,216 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d587844cb/f6fb64abaf8649f1b9400daeba7b5c03 [2018-10-26 23:32:00,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:32:00,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:32:00,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:32:00,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:32:00,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:32:00,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:00" (1/1) ... [2018-10-26 23:32:00,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254e2d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:00, skipping insertion in model container [2018-10-26 23:32:00,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:00" (1/1) ... [2018-10-26 23:32:00,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:32:00,339 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:32:00,850 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:32:00,855 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:32:00,983 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:32:01,006 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:32:01,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01 WrapperNode [2018-10-26 23:32:01,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:32:01,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:32:01,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:32:01,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:32:01,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:32:01,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:32:01,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:32:01,333 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:32:01,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (1/1) ... [2018-10-26 23:32:01,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:32:01,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:32:01,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:32:01,417 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:32:01,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (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 [2018-10-26 23:32:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:32:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:32:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:32:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:32:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:32:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:32:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:32:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:32:04,764 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:32:04,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:04 BoogieIcfgContainer [2018-10-26 23:32:04,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:32:04,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:32:04,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:32:04,782 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:32:04,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:32:00" (1/3) ... [2018-10-26 23:32:04,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17836c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:04, skipping insertion in model container [2018-10-26 23:32:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:01" (2/3) ... [2018-10-26 23:32:04,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17836c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:04, skipping insertion in model container [2018-10-26 23:32:04,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:04" (3/3) ... [2018-10-26 23:32:04,792 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label42_false-unreach-call.c [2018-10-26 23:32:04,803 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:32:04,814 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:32:04,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:32:04,882 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:32:04,882 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:32:04,882 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:32:04,882 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:32:04,883 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:32:04,883 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:32:04,883 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:32:04,883 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:32:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:32:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 23:32:04,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:04,924 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] [2018-10-26 23:32:04,931 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:04,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1002972724, now seen corresponding path program 1 times [2018-10-26 23:32:04,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:04,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:04,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:04,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:04,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:05,339 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 23:32:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:05,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:05,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:32:05,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:05,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:32:05,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:32:05,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:32:05,376 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-26 23:32:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:09,627 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-26 23:32:09,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:32:09,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-26 23:32:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:09,651 INFO L225 Difference]: With dead ends: 737 [2018-10-26 23:32:09,652 INFO L226 Difference]: Without dead ends: 515 [2018-10-26 23:32:09,661 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 [2018-10-26 23:32:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-26 23:32:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-26 23:32:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-26 23:32:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-26 23:32:09,764 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 24 [2018-10-26 23:32:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:09,765 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-26 23:32:09,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:32:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-26 23:32:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-26 23:32:09,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:09,772 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:09,772 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:09,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1186733907, now seen corresponding path program 1 times [2018-10-26 23:32:09,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:09,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:09,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:09,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:09,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:10,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:10,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:10,177 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:10,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:10,180 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-26 23:32:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:12,977 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-26 23:32:12,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:12,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-26 23:32:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:12,997 INFO L225 Difference]: With dead ends: 1863 [2018-10-26 23:32:12,997 INFO L226 Difference]: Without dead ends: 1354 [2018-10-26 23:32:13,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:32:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-26 23:32:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-26 23:32:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-26 23:32:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-26 23:32:13,120 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 99 [2018-10-26 23:32:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:13,121 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-26 23:32:13,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-26 23:32:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 23:32:13,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:13,129 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:13,130 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:13,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:13,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1340062609, now seen corresponding path program 1 times [2018-10-26 23:32:13,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:13,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:13,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:13,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:13,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:13,442 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:32:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:13,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:13,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:13,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:13,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:13,622 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-26 23:32:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:18,148 INFO L93 Difference]: Finished difference Result 3512 states and 5693 transitions. [2018-10-26 23:32:18,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:18,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-26 23:32:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:18,173 INFO L225 Difference]: With dead ends: 3512 [2018-10-26 23:32:18,173 INFO L226 Difference]: Without dead ends: 2187 [2018-10-26 23:32:18,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:32:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2018-10-26 23:32:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2165. [2018-10-26 23:32:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2018-10-26 23:32:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3178 transitions. [2018-10-26 23:32:18,280 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3178 transitions. Word has length 101 [2018-10-26 23:32:18,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:18,280 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 3178 transitions. [2018-10-26 23:32:18,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3178 transitions. [2018-10-26 23:32:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-26 23:32:18,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:18,286 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:18,286 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:18,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash 457598944, now seen corresponding path program 1 times [2018-10-26 23:32:18,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:18,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:18,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:18,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:18,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:18,567 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:32:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:19,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:32:19,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:32:19,101 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2018-10-26 23:32:19,104 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [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], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:32:19,170 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:32:19,170 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:32:21,734 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:32:32,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:32:32,641 INFO L272 AbstractInterpreter]: Visited 87 different actions 492 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:32:32,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:32,653 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:32:34,373 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 76.68% of their original sizes. [2018-10-26 23:32:34,374 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:32:47,688 INFO L415 sIntCurrentIteration]: We unified 103 AI predicates to 103 [2018-10-26 23:32:47,689 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:32:47,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:32:47,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [7] total 24 [2018-10-26 23:32:47,690 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:47,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:32:47,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:32:47,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:32:47,691 INFO L87 Difference]: Start difference. First operand 2165 states and 3178 transitions. Second operand 19 states. [2018-10-26 23:35:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:35:06,574 INFO L93 Difference]: Finished difference Result 5719 states and 8569 transitions. [2018-10-26 23:35:06,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-26 23:35:06,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2018-10-26 23:35:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:35:06,595 INFO L225 Difference]: With dead ends: 5719 [2018-10-26 23:35:06,595 INFO L226 Difference]: Without dead ends: 3560 [2018-10-26 23:35:06,608 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 114 GetRequests, 75 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2018-10-26 23:35:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2018-10-26 23:35:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3445. [2018-10-26 23:35:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3445 states. [2018-10-26 23:35:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4602 transitions. [2018-10-26 23:35:06,761 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4602 transitions. Word has length 104 [2018-10-26 23:35:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:35:06,762 INFO L481 AbstractCegarLoop]: Abstraction has 3445 states and 4602 transitions. [2018-10-26 23:35:06,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-26 23:35:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4602 transitions. [2018-10-26 23:35:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-26 23:35:06,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:35:06,765 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:35:06,765 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:35:06,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:35:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash -528442280, now seen corresponding path program 1 times [2018-10-26 23:35:06,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:35:06,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:35:06,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:35:06,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:35:06,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:35:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:35:07,011 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:35:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:35:07,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:35:07,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:35:07,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-26 23:35:07,082 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [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], [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], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:35:07,088 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:35:07,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:35:09,577 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:35:17,237 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:35:17,237 INFO L272 AbstractInterpreter]: Visited 123 different actions 356 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:35:17,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:35:17,248 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:35:18,959 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 78.1% of their original sizes. [2018-10-26 23:35:18,960 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:35:29,741 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-10-26 23:35:29,741 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:35:29,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:35:29,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-26 23:35:29,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:35:29,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 23:35:29,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 23:35:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-26 23:35:29,743 INFO L87 Difference]: Start difference. First operand 3445 states and 4602 transitions. Second operand 16 states. Received shutdown request... [2018-10-26 23:35:53,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:35:53,064 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:35:53,069 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:35:53,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:35:53 BoogieIcfgContainer [2018-10-26 23:35:53,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:35:53,071 INFO L168 Benchmark]: Toolchain (without parser) took 232841.78 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 23:35:53,072 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. [2018-10-26 23:35:53,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.32 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:53,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 323.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:53,075 INFO L168 Benchmark]: Boogie Preprocessor took 83.33 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. [2018-10-26 23:35:53,075 INFO L168 Benchmark]: RCFGBuilder took 3354.02 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: 109.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:53,076 INFO L168 Benchmark]: TraceAbstraction took 228298.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -865.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-26 23:35:53,082 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 776.32 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 323.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.33 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 3354.02 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: 109.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228298.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -865.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (3445states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (122 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 173.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 531 SDtfs, 4581 SDslu, 606 SDs, 0 SdLazy, 5022 SolverSat, 1189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 284 GetRequests, 200 SyntacticMatches, 21 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 28.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3445occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9923643550125764 AbsIntWeakeningRatio, 0.1652892561983471 AbsIntAvgWeakeningVarsNumRemoved, 285.1942148760331 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 160 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 463 ConstructedInterpolants, 0 QuantifiedInterpolants, 318931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 52/68 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown