java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:31:53,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:31:53,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:31:53,435 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:31:53,436 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:31:53,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:31:53,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:31:53,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:31:53,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:31:53,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:31:53,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:31:53,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:31:53,444 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:31:53,445 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:31:53,446 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:31:53,447 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:31:53,448 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:31:53,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:31:53,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:31:53,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:31:53,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:31:53,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:31:53,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:31:53,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:31:53,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:31:53,460 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:31:53,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:31:53,462 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:31:53,465 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:31:53,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:31:53,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:31:53,467 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:31:53,467 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:31:53,468 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:31:53,469 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:31:53,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:31:53,470 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:31:53,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:31:53,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:31:53,494 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:31:53,494 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:31:53,494 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:31:53,494 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:31:53,494 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:31:53,494 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:31:53,496 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:31:53,496 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:31:53,496 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:31:53,496 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:31:53,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:31:53,497 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:31:53,497 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:31:53,497 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:31:53,498 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:31:53,498 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:31:53,498 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:31:53,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:31:53,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:31:53,499 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:31:53,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:31:53,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:31:53,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:31:53,500 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:31:53,500 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:31:53,501 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:31:53,502 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:31:53,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:31:53,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:31:53,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:31:53,575 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:31:53,576 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:31:53,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-10-26 23:31:53,635 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cfc3992f0/26e67ace3964497dbfbcdacf6ae3c5e9/FLAG7d39b3a21 [2018-10-26 23:31:54,197 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:31:54,198 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-10-26 23:31:54,219 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cfc3992f0/26e67ace3964497dbfbcdacf6ae3c5e9/FLAG7d39b3a21 [2018-10-26 23:31:54,244 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cfc3992f0/26e67ace3964497dbfbcdacf6ae3c5e9 [2018-10-26 23:31:54,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:31:54,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:31:54,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:31:54,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:31:54,260 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:31:54,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:54,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351e815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54, skipping insertion in model container [2018-10-26 23:31:54,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:54,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:31:54,350 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:31:54,807 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:31:54,811 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:31:54,928 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:31:54,945 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:31:54,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54 WrapperNode [2018-10-26 23:31:54,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:31:54,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:31:54,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:31:54,947 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:31:54,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:54,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:31:55,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:31:55,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:31:55,145 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:31:55,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... [2018-10-26 23:31:55,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:31:55,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:31:55,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:31:55,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:31:55,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:31:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:31:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:31:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:31:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:31:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:31:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:31:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:31:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:31:58,522 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:31:58,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:58 BoogieIcfgContainer [2018-10-26 23:31:58,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:31:58,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:31:58,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:31:58,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:31:58,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:31:54" (1/3) ... [2018-10-26 23:31:58,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:58, skipping insertion in model container [2018-10-26 23:31:58,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:54" (2/3) ... [2018-10-26 23:31:58,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:58, skipping insertion in model container [2018-10-26 23:31:58,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:58" (3/3) ... [2018-10-26 23:31:58,532 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label29_false-unreach-call.c [2018-10-26 23:31:58,540 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:31:58,548 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:31:58,565 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:31:58,604 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:31:58,604 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:31:58,604 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:31:58,605 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:31:58,605 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:31:58,605 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:31:58,605 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:31:58,606 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:31:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:31:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 23:31:58,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:31:58,651 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] [2018-10-26 23:31:58,653 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:31:58,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:31:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash -246853596, now seen corresponding path program 1 times [2018-10-26 23:31:58,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:31:58,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:31:58,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:31:58,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:31:58,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:31:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:31:59,052 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:31:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:31:59,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:31:59,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:31:59,119 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:31:59,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:31:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:31:59,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:31:59,143 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-26 23:32:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:01,247 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-26 23:32:01,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:32:01,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-26 23:32:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:01,275 INFO L225 Difference]: With dead ends: 574 [2018-10-26 23:32:01,275 INFO L226 Difference]: Without dead ends: 356 [2018-10-26 23:32:01,285 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 [2018-10-26 23:32:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-26 23:32:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-26 23:32:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-26 23:32:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-26 23:32:01,360 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 22 [2018-10-26 23:32:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:01,361 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-26 23:32:01,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:32:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-26 23:32:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 23:32:01,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:01,368 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:01,368 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:01,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash -409159749, now seen corresponding path program 1 times [2018-10-26 23:32:01,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:01,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:01,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:01,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:01,371 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:01,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:01,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:32:01,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:01,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:32:01,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:32:01,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:32:01,761 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-26 23:32:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:05,144 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-26 23:32:05,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:32:05,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-10-26 23:32:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:05,155 INFO L225 Difference]: With dead ends: 1289 [2018-10-26 23:32:05,155 INFO L226 Difference]: Without dead ends: 939 [2018-10-26 23:32:05,160 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 [2018-10-26 23:32:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-26 23:32:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-26 23:32:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-26 23:32:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-26 23:32:05,226 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 105 [2018-10-26 23:32:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:05,227 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-26 23:32:05,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:32:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-26 23:32:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 23:32:05,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:05,233 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:32:05,233 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:05,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1170323611, now seen corresponding path program 1 times [2018-10-26 23:32:05,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:05,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:05,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:05,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:05,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:05,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:05,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:05,515 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:05,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:05,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:05,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:05,517 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-26 23:32:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:09,209 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-26 23:32:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:09,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-26 23:32:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:09,227 INFO L225 Difference]: With dead ends: 2537 [2018-10-26 23:32:09,228 INFO L226 Difference]: Without dead ends: 1617 [2018-10-26 23:32:09,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:32:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-26 23:32:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-26 23:32:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-26 23:32:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-26 23:32:09,302 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 121 [2018-10-26 23:32:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:09,303 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-26 23:32:09,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-26 23:32:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-26 23:32:09,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:09,314 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:32:09,314 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:09,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash -367068693, now seen corresponding path program 1 times [2018-10-26 23:32:09,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:09,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:09,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:09,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:09,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:09,655 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:32:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:09,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:32:09,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:32:09,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:09,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:32:09,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:32:09,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:32:09,916 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-26 23:32:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:11,249 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-26 23:32:11,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:32:11,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-26 23:32:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:11,270 INFO L225 Difference]: With dead ends: 3508 [2018-10-26 23:32:11,270 INFO L226 Difference]: Without dead ends: 1928 [2018-10-26 23:32:11,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:32:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-26 23:32:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-26 23:32:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-26 23:32:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-26 23:32:11,347 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 145 [2018-10-26 23:32:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:11,348 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-26 23:32:11,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:32:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-26 23:32:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-26 23:32:11,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:11,353 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:32:11,354 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:11,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash -531546105, now seen corresponding path program 1 times [2018-10-26 23:32:11,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:11,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:11,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:12,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:32:12,003 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:32:12,004 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-26 23:32:12,006 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:32:12,065 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:32:12,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:32:14,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:32:26,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:32:26,247 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:32:26,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:26,259 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:32:29,708 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 77.19% of their original sizes. [2018-10-26 23:32:29,708 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:32:54,145 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-10-26 23:32:54,146 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:32:54,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:32:54,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-26 23:32:54,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:32:54,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:32:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:32:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:32:54,149 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 19 states. [2018-10-26 23:35:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:35:08,995 INFO L93 Difference]: Finished difference Result 4765 states and 6874 transitions. [2018-10-26 23:35:08,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 23:35:08,995 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 185 [2018-10-26 23:35:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:35:09,012 INFO L225 Difference]: With dead ends: 4765 [2018-10-26 23:35:09,013 INFO L226 Difference]: Without dead ends: 2882 [2018-10-26 23:35:09,024 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 24 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-10-26 23:35:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2018-10-26 23:35:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2671. [2018-10-26 23:35:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2018-10-26 23:35:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 3539 transitions. [2018-10-26 23:35:09,169 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 3539 transitions. Word has length 185 [2018-10-26 23:35:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:35:09,170 INFO L481 AbstractCegarLoop]: Abstraction has 2671 states and 3539 transitions. [2018-10-26 23:35:09,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-26 23:35:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 3539 transitions. [2018-10-26 23:35:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-26 23:35:09,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:35:09,176 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:35:09,177 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:35:09,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:35:09,177 INFO L82 PathProgramCache]: Analyzing trace with hash -344008049, now seen corresponding path program 1 times [2018-10-26 23:35:09,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:35:09,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:35:09,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:35:09,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:35:09,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:35:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:35:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:35:09,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:35:09,496 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:35:09,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-26 23:35:09,497 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:35:09,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:35:09,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:35:12,169 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:35:19,773 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:35:19,774 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:35:19,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:35:19,783 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:35:22,119 INFO L227 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 76.7% of their original sizes. [2018-10-26 23:35:22,120 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:35:40,772 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-10-26 23:35:40,772 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:35:40,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:35:40,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-26 23:35:40,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:35:40,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 23:35:40,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 23:35:40,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-10-26 23:35:40,774 INFO L87 Difference]: Start difference. First operand 2671 states and 3539 transitions. Second operand 18 states. Received shutdown request... [2018-10-26 23:35:58,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:35:58,116 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:35:58,121 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:35:58,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:35:58 BoogieIcfgContainer [2018-10-26 23:35:58,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:35:58,123 INFO L168 Benchmark]: Toolchain (without parser) took 243868.02 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 508.5 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,124 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:35:58,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,126 INFO L168 Benchmark]: Boogie Preprocessor took 117.72 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,127 INFO L168 Benchmark]: RCFGBuilder took 3260.75 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: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,128 INFO L168 Benchmark]: TraceAbstraction took 239597.58 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 423.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:35:58,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 689.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.72 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3260.75 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: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239597.58 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 423.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (2671states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (66 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 239.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 162.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 557 SDtfs, 5239 SDslu, 442 SDs, 0 SdLazy, 5010 SolverSat, 1171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 449 GetRequests, 342 SyntacticMatches, 42 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 45.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2671occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941616444253121 AbsIntWeakeningRatio, 0.12871287128712872 AbsIntAvgWeakeningVarsNumRemoved, 139.8118811881188 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 799 NumberOfCodeBlocks, 799 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 793 ConstructedInterpolants, 0 QuantifiedInterpolants, 878742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 264/268 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown