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/Problem13_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:25:57,268 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:25:57,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:25:57,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:25:57,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:25:57,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:25:57,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:25:57,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:25:57,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:25:57,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:25:57,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:25:57,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:25:57,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:25:57,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:25:57,303 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:25:57,307 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:25:57,308 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:25:57,310 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:25:57,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:25:57,324 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:25:57,325 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:25:57,326 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:25:57,328 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:25:57,334 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:25:57,334 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:25:57,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:25:57,336 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:25:57,336 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 18:25:57,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:25:57,354 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:25:57,358 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:25:57,358 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:25:57,358 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:25:57,359 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:25:57,359 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:25:57,359 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:25:57,359 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:25:57,359 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:25:57,359 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:25:57,360 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:25:57,361 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:25:57,361 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:25:57,361 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:25:57,361 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:25:57,362 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:25:57,363 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:25:57,363 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:25:57,363 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:25:57,364 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:25:57,364 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:25:57,364 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:25:57,364 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:25:57,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:57,365 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:25:57,365 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:25:57,365 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:25:57,365 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:25:57,366 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:25:57,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:25:57,366 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:25:57,366 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:25:57,366 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:25:57,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:25:57,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:25:57,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:25:57,458 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:25:57,458 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:25:57,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-24 18:25:57,525 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d5e9b4d7/e9a4881699ea47bc8416786394f6a9f6/FLAGc4974175b [2018-10-24 18:25:58,314 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:25:58,315 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-24 18:25:58,346 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d5e9b4d7/e9a4881699ea47bc8416786394f6a9f6/FLAGc4974175b [2018-10-24 18:25:58,362 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d5e9b4d7/e9a4881699ea47bc8416786394f6a9f6 [2018-10-24 18:25:58,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:25:58,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:25:58,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:58,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:25:58,382 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:25:58,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:58" (1/1) ... [2018-10-24 18:25:58,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d755f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:58, skipping insertion in model container [2018-10-24 18:25:58,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:58" (1/1) ... [2018-10-24 18:25:58,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:25:58,581 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:59,950 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:59,955 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:26:00,629 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:26:00,665 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:26:00,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00 WrapperNode [2018-10-24 18:26:00,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:26:00,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:26:00,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:26:00,668 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:26:00,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:00,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:26:01,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:26:01,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:26:01,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:26:01,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (1/1) ... [2018-10-24 18:26:01,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:26:01,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:26:01,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:26:01,563 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:26:01,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (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 18:26:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:26:01,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:26:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:26:01,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:26:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:26:01,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:26:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:26:01,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:26:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:26:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:26:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:26:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:26:01,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:26:01,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:26:13,216 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:26:13,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:26:13 BoogieIcfgContainer [2018-10-24 18:26:13,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:26:13,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:26:13,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:26:13,226 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:26:13,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:58" (1/3) ... [2018-10-24 18:26:13,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127b3271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:26:13, skipping insertion in model container [2018-10-24 18:26:13,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:00" (2/3) ... [2018-10-24 18:26:13,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127b3271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:26:13, skipping insertion in model container [2018-10-24 18:26:13,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:26:13" (3/3) ... [2018-10-24 18:26:13,230 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44_false-unreach-call.c [2018-10-24 18:26:13,241 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:26:13,260 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:26:13,279 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:26:13,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:26:13,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:26:13,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:26:13,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:26:13,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:26:13,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:26:13,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:26:13,346 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:26:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:26:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:26:13,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:13,418 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] [2018-10-24 18:26:13,421 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:13,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:13,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1095367477, now seen corresponding path program 1 times [2018-10-24 18:26:13,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:13,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:13,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:13,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:13,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:13,974 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:26:14,084 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 18:26:14,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:14,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:26:14,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:14,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:26:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:26:14,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:14,111 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 18:26:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:23,424 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 18:26:23,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:26:23,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-24 18:26:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:23,470 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 18:26:23,470 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 18:26:23,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 18:26:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 18:26:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 18:26:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 18:26:23,663 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 37 [2018-10-24 18:26:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:23,664 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 18:26:23,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:26:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 18:26:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 18:26:23,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:23,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:23,672 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:23,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1403714778, now seen corresponding path program 1 times [2018-10-24 18:26:23,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:23,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:23,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:23,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:23,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:24,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:24,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:26:24,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:24,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:26:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:26:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:26:24,045 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 18:26:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:51,856 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-10-24 18:26:51,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:26:51,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-10-24 18:26:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:51,893 INFO L225 Difference]: With dead ends: 5737 [2018-10-24 18:26:51,893 INFO L226 Difference]: Without dead ends: 3769 [2018-10-24 18:26:51,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:26:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-10-24 18:26:52,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-10-24 18:26:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-10-24 18:26:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-10-24 18:26:52,045 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 113 [2018-10-24 18:26:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:52,046 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-10-24 18:26:52,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:26:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-10-24 18:26:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 18:26:52,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:52,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:52,055 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:52,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2119578826, now seen corresponding path program 1 times [2018-10-24 18:26:52,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:52,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:52,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:52,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:52,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:52,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:52,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:26:52,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:52,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:26:52,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:26:52,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:26:52,375 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-10-24 18:27:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:19,993 INFO L93 Difference]: Finished difference Result 13663 states and 21758 transitions. [2018-10-24 18:27:19,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:27:19,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-10-24 18:27:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:20,066 INFO L225 Difference]: With dead ends: 13663 [2018-10-24 18:27:20,067 INFO L226 Difference]: Without dead ends: 9984 [2018-10-24 18:27:20,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:27:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2018-10-24 18:27:20,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9792. [2018-10-24 18:27:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9792 states. [2018-10-24 18:27:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9792 states to 9792 states and 14498 transitions. [2018-10-24 18:27:20,402 INFO L78 Accepts]: Start accepts. Automaton has 9792 states and 14498 transitions. Word has length 127 [2018-10-24 18:27:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:20,403 INFO L481 AbstractCegarLoop]: Abstraction has 9792 states and 14498 transitions. [2018-10-24 18:27:20,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:27:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9792 states and 14498 transitions. [2018-10-24 18:27:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 18:27:20,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:20,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:20,411 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:20,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1301512730, now seen corresponding path program 1 times [2018-10-24 18:27:20,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:20,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:20,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:20,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:20,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:20,766 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:27:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:20,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:20,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:27:20,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:20,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:27:20,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:27:20,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:27:20,832 INFO L87 Difference]: Start difference. First operand 9792 states and 14498 transitions. Second operand 6 states. [2018-10-24 18:27:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:37,681 INFO L93 Difference]: Finished difference Result 34185 states and 53801 transitions. [2018-10-24 18:27:37,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:27:37,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 18:27:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:37,809 INFO L225 Difference]: With dead ends: 34185 [2018-10-24 18:27:37,810 INFO L226 Difference]: Without dead ends: 24399 [2018-10-24 18:27:37,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:27:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24399 states. [2018-10-24 18:27:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24399 to 24166. [2018-10-24 18:27:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24166 states. [2018-10-24 18:27:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24166 states to 24166 states and 34069 transitions. [2018-10-24 18:27:38,567 INFO L78 Accepts]: Start accepts. Automaton has 24166 states and 34069 transitions. Word has length 145 [2018-10-24 18:27:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:38,568 INFO L481 AbstractCegarLoop]: Abstraction has 24166 states and 34069 transitions. [2018-10-24 18:27:38,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:27:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 24166 states and 34069 transitions. [2018-10-24 18:27:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 18:27:38,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:38,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:38,574 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:38,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:38,574 INFO L82 PathProgramCache]: Analyzing trace with hash 351230122, now seen corresponding path program 1 times [2018-10-24 18:27:38,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:38,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:38,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:38,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:38,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:38,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:38,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:27:38,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:38,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:27:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:27:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:27:38,841 INFO L87 Difference]: Start difference. First operand 24166 states and 34069 transitions. Second operand 4 states. [2018-10-24 18:27:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:50,228 INFO L93 Difference]: Finished difference Result 66683 states and 100101 transitions. [2018-10-24 18:27:50,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:27:50,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-24 18:27:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:50,447 INFO L225 Difference]: With dead ends: 66683 [2018-10-24 18:27:50,448 INFO L226 Difference]: Without dead ends: 42523 [2018-10-24 18:27:50,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:27:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42523 states. [2018-10-24 18:27:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42523 to 42460. [2018-10-24 18:27:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42460 states. [2018-10-24 18:27:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42460 states to 42460 states and 59964 transitions. [2018-10-24 18:27:51,618 INFO L78 Accepts]: Start accepts. Automaton has 42460 states and 59964 transitions. Word has length 153 [2018-10-24 18:27:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:51,619 INFO L481 AbstractCegarLoop]: Abstraction has 42460 states and 59964 transitions. [2018-10-24 18:27:51,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:27:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42460 states and 59964 transitions. [2018-10-24 18:27:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-24 18:27:51,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:51,655 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:27:51,656 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:51,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:51,656 INFO L82 PathProgramCache]: Analyzing trace with hash -215837280, now seen corresponding path program 1 times [2018-10-24 18:27:51,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:51,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:51,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:51,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:51,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:52,259 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-24 18:27:52,594 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 18:27:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 18:27:52,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:27:52,790 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:27:52,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-10-24 18:27:52,793 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2823], [2825], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:27:52,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:27:52,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:27:56,907 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:28:03,426 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:28:03,428 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:28:03,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:03,441 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:28:09,973 INFO L232 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 71.33% of their original sizes. [2018-10-24 18:28:09,974 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:28:11,758 INFO L413 sIntCurrentIteration]: We have 284 unified AI predicates [2018-10-24 18:28:11,758 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:28:11,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:28:11,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-24 18:28:11,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:11,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:28:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:28:11,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:28:11,761 INFO L87 Difference]: Start difference. First operand 42460 states and 59964 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 18:29:32,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:29:32,647 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:29:32,652 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:29:32,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:29:32 BoogieIcfgContainer [2018-10-24 18:29:32,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:29:32,654 INFO L168 Benchmark]: Toolchain (without parser) took 214279.52 ms. Allocated memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -582.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,655 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:29:32,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2288.24 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 592.67 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 854.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,658 INFO L168 Benchmark]: Boogie Preprocessor took 302.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,659 INFO L168 Benchmark]: RCFGBuilder took 11656.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 42.2 MB). Peak memory consumption was 648.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,660 INFO L168 Benchmark]: TraceAbstraction took 199432.55 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 206.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 18:29:32,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2288.24 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 592.67 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 854.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 302.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11656.64 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 42.2 MB). Peak memory consumption was 648.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199432.55 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 206.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (42460states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (2261 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 199.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 174.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2698 SDtfs, 16212 SDslu, 2507 SDs, 0 SdLazy, 29075 SolverSat, 7659 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 142.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 325 GetRequests, 289 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42460occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960346695557961 AbsIntWeakeningRatio, 0.11619718309859155 AbsIntAvgWeakeningVarsNumRemoved, 41.693661971830984 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 573 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 860 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 854 ConstructedInterpolants, 0 QuantifiedInterpolants, 612304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 296/440 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown