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/Problem01_label45_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:17:25,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:17:25,326 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:17:25,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:17:25,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:17:25,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:17:25,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:17:25,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:17:25,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:17:25,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:17:25,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:17:25,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:17:25,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:17:25,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:17:25,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:17:25,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:17:25,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:17:25,353 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:17:25,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:17:25,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:17:25,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:17:25,361 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:17:25,363 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:17:25,381 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 19:17:25,414 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:17:25,415 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:17:25,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:17:25,420 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:17:25,420 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:17:25,420 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:17:25,420 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:17:25,423 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:17:25,423 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:17:25,423 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:17:25,424 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:17:25,424 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:17:25,425 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:17:25,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:17:25,425 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:17:25,425 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:17:25,426 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:17:25,427 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:17:25,427 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:17:25,427 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:17:25,427 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:17:25,427 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:17:25,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:17:25,428 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:17:25,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:17:25,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:17:25,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:17:25,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:17:25,429 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:17:25,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:17:25,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:17:25,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:17:25,430 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:17:25,430 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:17:25,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:17:25,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:17:25,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:17:25,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:17:25,526 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:17:25,526 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label45_true-unreach-call_false-termination.c [2018-10-24 19:17:25,591 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f27109c19/e4f71e572fa042ffb568b6b7fa3df214/FLAG23bf087f6 [2018-10-24 19:17:26,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:17:26,226 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label45_true-unreach-call_false-termination.c [2018-10-24 19:17:26,245 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f27109c19/e4f71e572fa042ffb568b6b7fa3df214/FLAG23bf087f6 [2018-10-24 19:17:26,267 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f27109c19/e4f71e572fa042ffb568b6b7fa3df214 [2018-10-24 19:17:26,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:17:26,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:17:26,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:17:26,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:17:26,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:17:26,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:26" (1/1) ... [2018-10-24 19:17:26,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b295a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:26, skipping insertion in model container [2018-10-24 19:17:26,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:17:26" (1/1) ... [2018-10-24 19:17:26,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:17:26,375 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:17:26,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:17:26,922 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:17:27,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:17:27,043 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:17:27,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27 WrapperNode [2018-10-24 19:17:27,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:17:27,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:17:27,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:17:27,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:17:27,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:17:27,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:17:27,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:17:27,133 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:17:27,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (1/1) ... [2018-10-24 19:17:27,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:17:27,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:17:27,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:17:27,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:17:27,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (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 19:17:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:17:27,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:17:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:17:27,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:17:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:17:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:17:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:17:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:17:30,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:17:30,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:30 BoogieIcfgContainer [2018-10-24 19:17:30,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:17:30,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:17:30,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:17:30,625 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:17:30,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:17:26" (1/3) ... [2018-10-24 19:17:30,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31044cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:30, skipping insertion in model container [2018-10-24 19:17:30,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:17:27" (2/3) ... [2018-10-24 19:17:30,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31044cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:17:30, skipping insertion in model container [2018-10-24 19:17:30,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:17:30" (3/3) ... [2018-10-24 19:17:30,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label45_true-unreach-call_false-termination.c [2018-10-24 19:17:30,639 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:17:30,649 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:17:30,668 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:17:30,710 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:17:30,710 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:17:30,710 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:17:30,710 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:17:30,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:17:30,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:17:30,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:17:30,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:17:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 19:17:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 19:17:30,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:30,757 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:17:30,760 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:30,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:30,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1391094344, now seen corresponding path program 1 times [2018-10-24 19:17:30,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:30,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:30,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:30,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:30,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:31,535 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:17:31,660 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 19:17:31,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:17:31,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:17:31,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:31,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:17:31,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:17:31,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:17:31,691 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 19:17:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:33,181 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 19:17:33,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:17:33,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2018-10-24 19:17:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:33,205 INFO L225 Difference]: With dead ends: 550 [2018-10-24 19:17:33,206 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 19:17:33,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:17:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 19:17:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 19:17:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 19:17:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-10-24 19:17:33,295 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 124 [2018-10-24 19:17:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:33,297 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-10-24 19:17:33,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:17:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-10-24 19:17:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 19:17:33,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:33,304 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:17:33,305 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:33,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:33,305 INFO L82 PathProgramCache]: Analyzing trace with hash -624789737, now seen corresponding path program 1 times [2018-10-24 19:17:33,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:33,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:33,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:33,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:33,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:17:33,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:17:33,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:17:33,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:33,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:17:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:17:33,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:17:33,571 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-10-24 19:17:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:35,490 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-10-24 19:17:35,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:17:35,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-24 19:17:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:35,502 INFO L225 Difference]: With dead ends: 1075 [2018-10-24 19:17:35,502 INFO L226 Difference]: Without dead ends: 741 [2018-10-24 19:17:35,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:17:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-24 19:17:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-24 19:17:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-24 19:17:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-10-24 19:17:35,562 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 135 [2018-10-24 19:17:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:35,563 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-10-24 19:17:35,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:17:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-10-24 19:17:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 19:17:35,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:35,569 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:17:35,569 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:35,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash -39605397, now seen corresponding path program 1 times [2018-10-24 19:17:35,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:35,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:35,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:35,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:35,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:17:36,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:17:36,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:17:36,019 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:36,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:17:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:17:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:17:36,021 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 5 states. [2018-10-24 19:17:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:38,373 INFO L93 Difference]: Finished difference Result 1578 states and 2533 transitions. [2018-10-24 19:17:38,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:17:38,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-10-24 19:17:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:38,379 INFO L225 Difference]: With dead ends: 1578 [2018-10-24 19:17:38,379 INFO L226 Difference]: Without dead ends: 721 [2018-10-24 19:17:38,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:17:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-10-24 19:17:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-10-24 19:17:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-10-24 19:17:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1069 transitions. [2018-10-24 19:17:38,440 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1069 transitions. Word has length 136 [2018-10-24 19:17:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:38,440 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 1069 transitions. [2018-10-24 19:17:38,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:17:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1069 transitions. [2018-10-24 19:17:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 19:17:38,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:38,445 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:17:38,445 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:38,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1115389459, now seen corresponding path program 1 times [2018-10-24 19:17:38,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:38,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:38,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:38,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:38,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:39,180 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-10-24 19:17:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:17:39,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:17:39,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:17:39,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:39,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:17:39,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:17:39,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:17:39,323 INFO L87 Difference]: Start difference. First operand 721 states and 1069 transitions. Second operand 5 states. [2018-10-24 19:17:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:40,658 INFO L93 Difference]: Finished difference Result 1572 states and 2365 transitions. [2018-10-24 19:17:40,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:17:40,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-24 19:17:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:40,667 INFO L225 Difference]: With dead ends: 1572 [2018-10-24 19:17:40,667 INFO L226 Difference]: Without dead ends: 720 [2018-10-24 19:17:40,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:17:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-10-24 19:17:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2018-10-24 19:17:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2018-10-24 19:17:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1062 transitions. [2018-10-24 19:17:40,705 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1062 transitions. Word has length 137 [2018-10-24 19:17:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:40,706 INFO L481 AbstractCegarLoop]: Abstraction has 720 states and 1062 transitions. [2018-10-24 19:17:40,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:17:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1062 transitions. [2018-10-24 19:17:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 19:17:40,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:40,710 INFO L375 BasicCegarLoop]: trace histogram [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 19:17:40,710 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:40,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1083310493, now seen corresponding path program 1 times [2018-10-24 19:17:40,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:40,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:40,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:40,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:40,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:17:40,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:17:40,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:17:40,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:40,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:17:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:17:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:17:40,870 INFO L87 Difference]: Start difference. First operand 720 states and 1062 transitions. Second operand 3 states. [2018-10-24 19:17:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:17:41,970 INFO L93 Difference]: Finished difference Result 1882 states and 2820 transitions. [2018-10-24 19:17:41,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:17:41,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2018-10-24 19:17:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:17:41,978 INFO L225 Difference]: With dead ends: 1882 [2018-10-24 19:17:41,978 INFO L226 Difference]: Without dead ends: 1168 [2018-10-24 19:17:41,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:17:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2018-10-24 19:17:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1164. [2018-10-24 19:17:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2018-10-24 19:17:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1592 transitions. [2018-10-24 19:17:42,018 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1592 transitions. Word has length 140 [2018-10-24 19:17:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:17:42,019 INFO L481 AbstractCegarLoop]: Abstraction has 1164 states and 1592 transitions. [2018-10-24 19:17:42,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:17:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1592 transitions. [2018-10-24 19:17:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 19:17:42,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:17:42,025 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:42,026 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:17:42,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1130743534, now seen corresponding path program 1 times [2018-10-24 19:17:42,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:17:42,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:42,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:17:42,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:17:42,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:17:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:17:42,533 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 19:17:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:17:42,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:17:42,661 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:17:42,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-24 19:17:42,665 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [629], [631], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:17:42,749 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:17:42,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:17:51,894 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:17:51,896 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 19:17:51,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:17:51,911 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:17:55,406 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 79.83% of their original sizes. [2018-10-24 19:17:55,407 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:17:56,759 INFO L413 sIntCurrentIteration]: We have 171 unified AI predicates [2018-10-24 19:17:56,759 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:17:56,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:17:56,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 19:17:56,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:17:56,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 19:17:56,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 19:17:56,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:17:56,764 INFO L87 Difference]: Start difference. First operand 1164 states and 1592 transitions. Second operand 12 states. [2018-10-24 19:18:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:18:06,815 INFO L93 Difference]: Finished difference Result 2383 states and 3259 transitions. [2018-10-24 19:18:06,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:18:06,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2018-10-24 19:18:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:18:06,827 INFO L225 Difference]: With dead ends: 2383 [2018-10-24 19:18:06,827 INFO L226 Difference]: Without dead ends: 1225 [2018-10-24 19:18:06,831 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:18:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2018-10-24 19:18:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2018-10-24 19:18:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2018-10-24 19:18:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1658 transitions. [2018-10-24 19:18:06,878 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1658 transitions. Word has length 172 [2018-10-24 19:18:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:18:06,878 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1658 transitions. [2018-10-24 19:18:06,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 19:18:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1658 transitions. [2018-10-24 19:18:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 19:18:06,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:18:06,892 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:06,893 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:18:06,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash -782139567, now seen corresponding path program 1 times [2018-10-24 19:18:06,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:18:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:06,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:18:06,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:18:06,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:18:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:18:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 19:18:07,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:18:07,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:18:07,237 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 19:18:07,238 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [629], [631], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:18:07,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:18:07,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:18:30,862 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:18:30,863 INFO L272 AbstractInterpreter]: Visited 129 different actions 196 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:18:30,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:18:30,871 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:18:35,446 INFO L232 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 80.61% of their original sizes. [2018-10-24 19:18:35,446 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:18:43,888 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 19:18:43,889 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:18:43,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:18:43,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:18:43,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:18:43,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:18:43,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:18:43,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:18:43,890 INFO L87 Difference]: Start difference. First operand 1225 states and 1658 transitions. Second operand 14 states. [2018-10-24 19:19:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:19:03,062 INFO L93 Difference]: Finished difference Result 2528 states and 3449 transitions. [2018-10-24 19:19:03,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 19:19:03,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 181 [2018-10-24 19:19:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:19:03,069 INFO L225 Difference]: With dead ends: 2528 [2018-10-24 19:19:03,070 INFO L226 Difference]: Without dead ends: 1370 [2018-10-24 19:19:03,074 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 74 SyntacticMatches, 94 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2018-10-24 19:19:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2018-10-24 19:19:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1363. [2018-10-24 19:19:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2018-10-24 19:19:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1806 transitions. [2018-10-24 19:19:03,116 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1806 transitions. Word has length 181 [2018-10-24 19:19:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:19:03,117 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1806 transitions. [2018-10-24 19:19:03,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:19:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1806 transitions. [2018-10-24 19:19:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 19:19:03,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:19:03,124 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 19:19:03,124 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:19:03,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:03,125 INFO L82 PathProgramCache]: Analyzing trace with hash -216405787, now seen corresponding path program 1 times [2018-10-24 19:19:03,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:19:03,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:19:03,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:19:03,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:19:03,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:19:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:19:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 100 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 19:19:03,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:19:03,321 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:19:03,322 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-24 19:19:03,322 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [629], [631], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:19:03,328 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:19:03,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:19:39,296 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:19:39,296 INFO L272 AbstractInterpreter]: Visited 129 different actions 196 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:19:39,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:19:39,306 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:19:48,200 INFO L232 lantSequenceWeakener]: Weakened 89 states. On average, predicates are now at 81.52% of their original sizes. [2018-10-24 19:19:48,201 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:21:01,256 INFO L413 sIntCurrentIteration]: We have 213 unified AI predicates [2018-10-24 19:21:01,256 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:21:01,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:21:01,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-10-24 19:21:01,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:01,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 19:21:01,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 19:21:01,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2018-10-24 19:21:01,258 INFO L87 Difference]: Start difference. First operand 1363 states and 1806 transitions. Second operand 25 states. Received shutdown request... [2018-10-24 19:21:42,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:21:42,429 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:21:42,435 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:21:42,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:21:42 BoogieIcfgContainer [2018-10-24 19:21:42,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:21:42,437 INFO L168 Benchmark]: Toolchain (without parser) took 256155.94 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 1.5 GB in the end (delta: -156.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,438 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:21:42,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.94 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,440 INFO L168 Benchmark]: Boogie Preprocessor took 214.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -812.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,441 INFO L168 Benchmark]: RCFGBuilder took 3272.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 106.5 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,442 INFO L168 Benchmark]: TraceAbstraction took 251814.37 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 504.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:21:42,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.94 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 87.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 214.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -812.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3272.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 106.5 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251814.37 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 504.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 527]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 527). Cancelled while BasicCegarLoop was constructing difference of abstraction (1363states) and FLOYD_HOARE automaton (currently 12 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (47 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 251.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 78.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 904 SDtfs, 3091 SDslu, 870 SDs, 0 SdLazy, 4018 SolverSat, 761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 629 GetRequests, 431 SyntacticMatches, 109 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 92.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 68.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9949506181991922 AbsIntWeakeningRatio, 0.2074468085106383 AbsIntAvgWeakeningVarsNumRemoved, 1451.0514184397164 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1239 NumberOfCodeBlocks, 1239 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1231 ConstructedInterpolants, 0 QuantifiedInterpolants, 955880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 293/325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown