java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:43:28,413 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:43:28,418 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:43:28,431 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:43:28,432 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:43:28,433 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:43:28,434 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:43:28,436 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:43:28,438 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:43:28,438 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:43:28,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:43:28,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:43:28,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:43:28,441 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:43:28,443 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:43:28,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:43:28,444 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:43:28,446 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:43:28,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:43:28,450 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:43:28,451 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:43:28,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:43:28,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:43:28,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:43:28,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:43:28,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:43:28,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:43:28,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:43:28,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:43:28,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:43:28,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:43:28,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:43:28,463 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:43:28,479 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:43:28,479 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:43:28,480 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:43:28,480 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:43:28,480 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:43:28,481 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:43:28,481 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:43:28,481 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:43:28,481 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:43:28,481 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:43:28,482 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:43:28,482 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:43:28,482 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:43:28,483 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:43:28,483 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:43:28,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:43:28,483 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:43:28,483 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:43:28,484 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:43:28,484 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:43:28,484 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:43:28,484 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:43:28,484 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:43:28,484 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:43:28,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:43:28,485 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:43:28,485 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:43:28,485 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:43:28,485 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:43:28,486 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:43:28,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:43:28,486 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:43:28,486 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:43:28,486 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:43:28,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:43:28,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:43:28,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:43:28,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:43:28,559 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:43:28,560 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 21:43:28,617 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4007c39/c80dbcb25d674677bfa1b3322d0ce477/FLAG22a93b541 [2018-10-24 21:43:29,213 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:43:29,214 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 21:43:29,243 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4007c39/c80dbcb25d674677bfa1b3322d0ce477/FLAG22a93b541 [2018-10-24 21:43:29,265 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4007c39/c80dbcb25d674677bfa1b3322d0ce477 [2018-10-24 21:43:29,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:43:29,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:43:29,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:43:29,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:43:29,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:43:29,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:43:29" (1/1) ... [2018-10-24 21:43:29,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:29, skipping insertion in model container [2018-10-24 21:43:29,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:43:29" (1/1) ... [2018-10-24 21:43:29,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:43:29,360 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:43:29,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:43:29,883 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:43:30,049 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:43:30,070 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:43:30,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30 WrapperNode [2018-10-24 21:43:30,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:43:30,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:43:30,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:43:30,073 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:43:30,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:43:30,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:43:30,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:43:30,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:43:30,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... [2018-10-24 21:43:30,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:43:30,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:43:30,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:43:30,397 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:43:30,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:43:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:43:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:43:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:43:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:43:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:43:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:43:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:43:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:43:34,175 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:43:34,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:43:34 BoogieIcfgContainer [2018-10-24 21:43:34,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:43:34,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:43:34,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:43:34,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:43:34,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:43:29" (1/3) ... [2018-10-24 21:43:34,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754186e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:43:34, skipping insertion in model container [2018-10-24 21:43:34,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:30" (2/3) ... [2018-10-24 21:43:34,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754186e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:43:34, skipping insertion in model container [2018-10-24 21:43:34,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:43:34" (3/3) ... [2018-10-24 21:43:34,188 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 21:43:34,197 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:43:34,207 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:43:34,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:43:34,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:43:34,265 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:43:34,265 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:43:34,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:43:34,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:43:34,266 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:43:34,266 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:43:34,266 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:43:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:43:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 21:43:34,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:34,305 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] [2018-10-24 21:43:34,307 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:34,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash 227880372, now seen corresponding path program 1 times [2018-10-24 21:43:34,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:34,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:34,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:34,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:34,749 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:43:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:34,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:34,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:43:34,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:34,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:43:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:43:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:43:34,806 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:43:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:36,737 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:43:36,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:43:36,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-10-24 21:43:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:36,759 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:43:36,760 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:43:36,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:43:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:43:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:43:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:43:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-24 21:43:36,863 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 42 [2018-10-24 21:43:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:36,864 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-24 21:43:36,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:43:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-24 21:43:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 21:43:36,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:36,872 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:43:36,872 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:36,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1420249389, now seen corresponding path program 1 times [2018-10-24 21:43:36,873 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:36,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:36,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:37,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:37,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:43:37,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:37,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:43:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:43:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:43:37,166 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-24 21:43:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:41,268 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-24 21:43:41,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:43:41,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-24 21:43:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:41,284 INFO L225 Difference]: With dead ends: 1416 [2018-10-24 21:43:41,284 INFO L226 Difference]: Without dead ends: 988 [2018-10-24 21:43:41,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:43:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-24 21:43:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-24 21:43:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-24 21:43:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-24 21:43:41,403 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 119 [2018-10-24 21:43:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:41,403 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-24 21:43:41,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:43:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-24 21:43:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 21:43:41,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:41,413 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:43:41,413 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:41,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:41,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2006517165, now seen corresponding path program 1 times [2018-10-24 21:43:41,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:41,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:41,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:41,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:41,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:41,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:41,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:43:41,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:41,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:43:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:43:41,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:43:41,756 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-24 21:43:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:44,767 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-24 21:43:44,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:43:44,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-24 21:43:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:44,786 INFO L225 Difference]: With dead ends: 2353 [2018-10-24 21:43:44,786 INFO L226 Difference]: Without dead ends: 1386 [2018-10-24 21:43:44,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:43:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-24 21:43:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-24 21:43:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 21:43:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-24 21:43:44,870 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 183 [2018-10-24 21:43:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:44,871 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-24 21:43:44,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:43:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-24 21:43:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 21:43:44,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:44,879 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:44,880 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:44,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:44,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1261597429, now seen corresponding path program 1 times [2018-10-24 21:43:44,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:44,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:44,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:44,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:44,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:45,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:45,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:45,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-10-24 21:43:45,436 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:45,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:45,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:47,271 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:47,273 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:43:47,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:47,318 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:49,302 INFO L232 lantSequenceWeakener]: Weakened 195 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-24 21:43:49,302 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:43:49,740 INFO L413 sIntCurrentIteration]: We have 202 unified AI predicates [2018-10-24 21:43:49,741 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:43:49,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:43:49,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:43:49,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:49,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:43:49,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:43:49,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:43:49,744 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-24 21:43:52,050 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:44:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:04,105 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-24 21:44:04,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:44:04,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2018-10-24 21:44:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:04,114 INFO L225 Difference]: With dead ends: 2883 [2018-10-24 21:44:04,115 INFO L226 Difference]: Without dead ends: 1537 [2018-10-24 21:44:04,119 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:44:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-24 21:44:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-24 21:44:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-24 21:44:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-24 21:44:04,166 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 203 [2018-10-24 21:44:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:04,166 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-24 21:44:04,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:44:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-24 21:44:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-24 21:44:04,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:04,173 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:04,173 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:04,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:04,174 INFO L82 PathProgramCache]: Analyzing trace with hash 694620, now seen corresponding path program 1 times [2018-10-24 21:44:04,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:04,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:04,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:04,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:04,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:04,639 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:44:04,850 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:44:05,586 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 21:44:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 192 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:44:06,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:06,137 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:06,137 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 289 with the following transitions: [2018-10-24 21:44:06,138 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:44:06,143 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:06,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:44:10,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:44:10,570 INFO L272 AbstractInterpreter]: Visited 94 different actions 182 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:44:10,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:10,580 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:44:12,612 INFO L232 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 79.06% of their original sizes. [2018-10-24 21:44:12,612 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:40,228 INFO L413 sIntCurrentIteration]: We have 287 unified AI predicates [2018-10-24 21:44:40,228 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:40,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:40,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 21:44:40,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:40,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 21:44:40,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 21:44:40,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:44:40,231 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 24 states. [2018-10-24 21:45:34,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:46:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:58,574 INFO L93 Difference]: Finished difference Result 4340 states and 6209 transitions. [2018-10-24 21:46:58,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-24 21:46:58,574 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 288 [2018-10-24 21:46:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:58,590 INFO L225 Difference]: With dead ends: 4340 [2018-10-24 21:46:58,590 INFO L226 Difference]: Without dead ends: 2994 [2018-10-24 21:46:58,597 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 303 GetRequests, 225 SyntacticMatches, 40 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2018-10-24 21:46:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2018-10-24 21:46:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2506. [2018-10-24 21:46:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2018-10-24 21:46:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3349 transitions. [2018-10-24 21:46:58,723 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3349 transitions. Word has length 288 [2018-10-24 21:46:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:58,723 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3349 transitions. [2018-10-24 21:46:58,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 21:46:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3349 transitions. [2018-10-24 21:46:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-24 21:46:58,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:58,732 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:46:58,732 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:58,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:58,733 INFO L82 PathProgramCache]: Analyzing trace with hash 205031280, now seen corresponding path program 1 times [2018-10-24 21:46:58,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:58,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:58,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:58,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:58,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 164 proven. 125 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 21:46:59,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:59,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:59,191 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-24 21:46:59,192 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:46:59,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:59,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:47:03,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:47:03,617 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:47:03,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:03,621 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:47:06,458 INFO L232 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-24 21:47:06,458 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:47:25,760 INFO L413 sIntCurrentIteration]: We have 313 unified AI predicates [2018-10-24 21:47:25,760 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:47:25,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:47:25,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-10-24 21:47:25,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:25,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:47:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:47:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:47:25,762 INFO L87 Difference]: Start difference. First operand 2506 states and 3349 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 21:47:32,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:47:32,192 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:47:32,197 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:47:32,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:47:32 BoogieIcfgContainer [2018-10-24 21:47:32,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:47:32,198 INFO L168 Benchmark]: Toolchain (without parser) took 242922.08 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 519.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,199 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:47:32,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.78 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,202 INFO L168 Benchmark]: Boogie Preprocessor took 111.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,202 INFO L168 Benchmark]: RCFGBuilder took 3779.52 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: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,203 INFO L168 Benchmark]: TraceAbstraction took 238019.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 434.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:32,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 793.78 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3779.52 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: 117.7 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238019.84 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 434.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (2506states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (24 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 168.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 758 SDtfs, 6970 SDslu, 752 SDs, 0 SdLazy, 7064 SolverSat, 1307 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 848 GetRequests, 706 SyntacticMatches, 65 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 51.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2506occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.995163811485778 AbsIntWeakeningRatio, 0.11221945137157108 AbsIntAvgWeakeningVarsNumRemoved, 486.2556109725686 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 539 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1149 NumberOfCodeBlocks, 1149 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1143 ConstructedInterpolants, 0 QuantifiedInterpolants, 2028645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 630/903 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown