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/Problem14_label21_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:39:27,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:39:27,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:39:27,583 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:39:27,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:39:27,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:39:27,589 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:39:27,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:39:27,594 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:39:27,595 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:39:27,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:39:27,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:39:27,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:39:27,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:39:27,600 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:39:27,601 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:39:27,601 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:39:27,603 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:39:27,605 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:39:27,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:39:27,608 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:39:27,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:39:27,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:39:27,613 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:39:27,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:39:27,614 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:39:27,615 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:39:27,616 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:39:27,617 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:39:27,618 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:39:27,618 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:39:27,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:39:27,619 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:39:27,619 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:39:27,620 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:39:27,621 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:39:27,621 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 [2018-10-24 21:39:27,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:39:27,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:39:27,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:39:27,638 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:39:27,638 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:39:27,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:39:27,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:39:27,639 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:39:27,639 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:39:27,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:39:27,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:39:27,640 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:39:27,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:39:27,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:39:27,641 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:39:27,641 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:39:27,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:39:27,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:39:27,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:39:27,642 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:39:27,642 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:39:27,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:39:27,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:39:27,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:39:27,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:39:27,644 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:39:27,644 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:39:27,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:39:27,644 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:39:27,644 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:39:27,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:39:27,645 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:39:27,645 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:39:27,645 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:39:27,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:39:27,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:39:27,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:39:27,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:39:27,714 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:39:27,715 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21_true-unreach-call_false-termination.c [2018-10-24 21:39:27,783 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8adf3cd55/94b35c14c0f041b29aadd6ce5ee269c0/FLAGc24ad17e7 [2018-10-24 21:39:28,357 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:39:28,358 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label21_true-unreach-call_false-termination.c [2018-10-24 21:39:28,374 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8adf3cd55/94b35c14c0f041b29aadd6ce5ee269c0/FLAGc24ad17e7 [2018-10-24 21:39:28,391 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8adf3cd55/94b35c14c0f041b29aadd6ce5ee269c0 [2018-10-24 21:39:28,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:39:28,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:39:28,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:39:28,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:39:28,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:39:28,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:39:28" (1/1) ... [2018-10-24 21:39:28,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:28, skipping insertion in model container [2018-10-24 21:39:28,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:39:28" (1/1) ... [2018-10-24 21:39:28,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:39:28,498 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:39:29,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:39:29,009 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:39:29,191 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:39:29,210 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:39:29,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29 WrapperNode [2018-10-24 21:39:29,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:39:29,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:39:29,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:39:29,213 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:39:29,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:39:29,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:39:29,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:39:29,456 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:39:29,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (1/1) ... [2018-10-24 21:39:29,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:39:29,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:39:29,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:39:29,554 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:39:29,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (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 [2018-10-24 21:39:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:39:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:39:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:39:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:39:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:39:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:39:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:39:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:39:33,267 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:39:33,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:39:33 BoogieIcfgContainer [2018-10-24 21:39:33,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:39:33,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:39:33,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:39:33,277 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:39:33,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:39:28" (1/3) ... [2018-10-24 21:39:33,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:39:33, skipping insertion in model container [2018-10-24 21:39:33,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:39:29" (2/3) ... [2018-10-24 21:39:33,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55525b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:39:33, skipping insertion in model container [2018-10-24 21:39:33,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:39:33" (3/3) ... [2018-10-24 21:39:33,281 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label21_true-unreach-call_false-termination.c [2018-10-24 21:39:33,289 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:39:33,297 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:39:33,314 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:39:33,354 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:39:33,354 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:39:33,354 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:39:33,354 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:39:33,355 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:39:33,355 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:39:33,355 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:39:33,355 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:39:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:39:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 21:39:33,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:33,392 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:39:33,394 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:33,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1101027815, now seen corresponding path program 1 times [2018-10-24 21:39:33,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:33,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:33,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:33,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:33,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:33,811 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:39:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:33,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:33,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:39:33,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:33,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:39:33,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:39:33,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:39:33,946 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:39:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:35,823 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:39:35,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:39:35,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-10-24 21:39:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:35,855 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:39:35,855 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:39:35,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:39:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:39:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:39:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:39:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-24 21:39:35,953 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 41 [2018-10-24 21:39:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:35,954 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-24 21:39:35,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:39:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-24 21:39:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 21:39:35,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:35,962 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:39:35,962 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:35,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:35,963 INFO L82 PathProgramCache]: Analyzing trace with hash 212852571, now seen corresponding path program 1 times [2018-10-24 21:39:35,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:35,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:35,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:35,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:35,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:36,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:36,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:39:36,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:36,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:39:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:39:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:39:36,228 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-24 21:39:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:40,926 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-24 21:39:40,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:39:40,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-24 21:39:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:40,947 INFO L225 Difference]: With dead ends: 1416 [2018-10-24 21:39:40,947 INFO L226 Difference]: Without dead ends: 988 [2018-10-24 21:39:40,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:39:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-24 21:39:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-24 21:39:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-24 21:39:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-24 21:39:41,011 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 118 [2018-10-24 21:39:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:41,012 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-24 21:39:41,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:39:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-24 21:39:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 21:39:41,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:41,021 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:39:41,021 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:41,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2137480229, now seen corresponding path program 1 times [2018-10-24 21:39:41,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:41,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:41,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:41,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:41,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:41,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:39:41,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:41,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:39:41,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:39:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:39:41,413 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-24 21:39:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:44,380 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-24 21:39:44,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:39:44,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-10-24 21:39:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:44,397 INFO L225 Difference]: With dead ends: 2353 [2018-10-24 21:39:44,398 INFO L226 Difference]: Without dead ends: 1386 [2018-10-24 21:39:44,405 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 [2018-10-24 21:39:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-24 21:39:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-24 21:39:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 21:39:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-24 21:39:44,480 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 182 [2018-10-24 21:39:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:44,481 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-24 21:39:44,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:39:44,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-24 21:39:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-24 21:39:44,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:44,487 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:39:44,487 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:44,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -779677212, now seen corresponding path program 1 times [2018-10-24 21:39:44,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:44,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:44,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:44,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:39:44,767 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:39:44,768 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-24 21:39:44,770 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:39:44,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:39:44,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:39:46,606 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:39:46,607 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:39:46,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:46,637 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:39:48,344 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 77.91% of their original sizes. [2018-10-24 21:39:48,344 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:39:48,616 INFO L413 sIntCurrentIteration]: We have 201 unified AI predicates [2018-10-24 21:39:48,616 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:39:48,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:39:48,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:39:48,618 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:48,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:39:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:39:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:39:48,619 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-24 21:39:50,894 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:40:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:40:04,576 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-24 21:40:04,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:40:04,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2018-10-24 21:40:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:40:04,586 INFO L225 Difference]: With dead ends: 2883 [2018-10-24 21:40:04,586 INFO L226 Difference]: Without dead ends: 1537 [2018-10-24 21:40:04,592 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:40:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-24 21:40:04,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-24 21:40:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-24 21:40:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-24 21:40:04,645 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 202 [2018-10-24 21:40:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:40:04,645 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-24 21:40:04,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:40:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-24 21:40:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-24 21:40:04,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:40:04,652 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:40:04,653 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:40:04,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1751229010, now seen corresponding path program 1 times [2018-10-24 21:40:04,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:40:04,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:04,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:40:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:40:04,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:40:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:40:05,225 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:40:05,426 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:40:05,658 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:40:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 189 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:40:06,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:40:06,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:40:06,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-24 21:40:06,222 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:40:06,291 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:40:06,292 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:40:10,019 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:40:10,020 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:40:10,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:40:10,054 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:40:13,133 INFO L232 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 79.54% of their original sizes. [2018-10-24 21:40:13,133 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:41:03,272 INFO L413 sIntCurrentIteration]: We have 286 unified AI predicates [2018-10-24 21:41:03,273 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:41:03,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:41:03,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 21:41:03,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:03,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 21:41:03,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 21:41:03,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:41:03,275 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 24 states. [2018-10-24 21:42:25,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:43:33,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:43:33,614 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:43:33,619 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:43:33,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:43:33 BoogieIcfgContainer [2018-10-24 21:43:33,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:43:33,621 INFO L168 Benchmark]: Toolchain (without parser) took 245214.51 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 204.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:33,622 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:43:33,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.89 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. [2018-10-24 21:43:33,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:33,624 INFO L168 Benchmark]: Boogie Preprocessor took 97.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:33,625 INFO L168 Benchmark]: RCFGBuilder took 3717.56 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: 118.6 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:33,625 INFO L168 Benchmark]: TraceAbstraction took 240346.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 128.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:43:33,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 802.89 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 243.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3717.56 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: 118.6 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240346.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 128.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 18 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (1432 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 240.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 175.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 634 SDtfs, 3909 SDslu, 835 SDs, 0 SdLazy, 6781 SolverSat, 1066 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 523 GetRequests, 407 SyntacticMatches, 63 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 54.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949818468589112 AbsIntWeakeningRatio, 0.11909650924024641 AbsIntAvgWeakeningVarsNumRemoved, 542.6550308008214 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 830 NumberOfCodeBlocks, 830 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 825 ConstructedInterpolants, 0 QuantifiedInterpolants, 1379825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 405/553 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown