java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem15_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:40:13,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:40:13,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:40:13,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:40:13,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:40:13,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:40:13,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:40:13,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:40:13,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:40:13,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:40:13,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:40:13,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:40:13,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:40:13,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:40:13,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:40:13,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:40:13,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:40:13,365 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:40:13,369 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:40:13,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:40:13,375 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:40:13,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:40:13,382 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:40:13,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:40:13,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:40:13,387 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:40:13,388 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:40:13,389 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:40:13,392 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:40:13,395 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:40:13,395 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:40:13,396 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:40:13,397 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:40:13,397 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:40:13,398 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:40:13,398 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:40:13,401 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:40:13,432 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:40:13,432 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:40:13,433 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:40:13,434 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:40:13,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:40:13,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:40:13,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:40:13,435 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:40:13,435 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:40:13,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:40:13,435 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:40:13,435 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:40:13,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:40:13,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:40:13,436 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:40:13,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:40:13,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:40:13,438 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:40:13,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:40:13,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:40:13,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:40:13,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:40:13,439 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:40:13,439 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:40:13,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:40:13,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:40:13,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:40:13,440 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:40:13,440 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:40:13,441 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:40:13,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:40:13,441 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:40:13,441 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:40:13,441 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:40:13,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:40:13,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:40:13,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:40:13,532 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:40:13,532 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:40:13,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-11-07 03:40:13,594 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f0f400a/19b7fa79b4954f51b4afe00954942298/FLAG6d414ec0a [2018-11-07 03:40:14,364 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:40:14,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-11-07 03:40:14,389 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f0f400a/19b7fa79b4954f51b4afe00954942298/FLAG6d414ec0a [2018-11-07 03:40:14,409 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f0f400a/19b7fa79b4954f51b4afe00954942298 [2018-11-07 03:40:14,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:40:14,424 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:40:14,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:14,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:40:14,429 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:40:14,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:14,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ec1c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:14, skipping insertion in model container [2018-11-07 03:40:14,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:14" (1/1) ... [2018-11-07 03:40:14,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:40:14,558 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:40:15,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:15,425 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:40:15,725 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:15,748 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:40:15,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15 WrapperNode [2018-11-07 03:40:15,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:15,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:15,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:40:15,751 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:40:15,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:15,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:16,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:40:16,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:40:16,002 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:40:16,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... [2018-11-07 03:40:16,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:40:16,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:40:16,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:40:16,186 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:40:16,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:40:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:40:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:40:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:40:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:40:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:40:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:40:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:40:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:40:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:40:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:40:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:40:24,252 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:40:24,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:24 BoogieIcfgContainer [2018-11-07 03:40:24,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:40:24,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:40:24,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:40:24,259 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:40:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:40:14" (1/3) ... [2018-11-07 03:40:24,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed3096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:24, skipping insertion in model container [2018-11-07 03:40:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:15" (2/3) ... [2018-11-07 03:40:24,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ed3096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:24, skipping insertion in model container [2018-11-07 03:40:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:24" (3/3) ... [2018-11-07 03:40:24,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label59_true-unreach-call.c [2018-11-07 03:40:24,274 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:40:24,284 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:40:24,302 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:40:24,346 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:40:24,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:40:24,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:40:24,347 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:40:24,347 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:40:24,347 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:40:24,347 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:40:24,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:40:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:40:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 03:40:24,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:24,401 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:40:24,403 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:24,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1120743887, now seen corresponding path program 1 times [2018-11-07 03:40:24,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:24,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:24,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:24,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:24,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:24,965 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:40:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:25,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:25,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:40:25,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:25,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:40:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:40:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:25,089 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:40:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:31,114 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:40:31,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:40:31,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-11-07 03:40:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:31,143 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:40:31,144 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:40:31,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:40:31,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 03:40:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 03:40:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 03:40:31,269 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 61 [2018-11-07 03:40:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:31,270 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 03:40:31,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:40:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 03:40:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 03:40:31,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:31,279 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, 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] [2018-11-07 03:40:31,279 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:31,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1471271461, now seen corresponding path program 1 times [2018-11-07 03:40:31,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:31,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:31,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:31,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:31,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:31,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:31,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:40:31,851 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:31,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:40:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:40:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:40:31,854 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-11-07 03:40:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:42,362 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-11-07 03:40:42,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:40:42,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-11-07 03:40:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:42,381 INFO L225 Difference]: With dead ends: 2506 [2018-11-07 03:40:42,382 INFO L226 Difference]: Without dead ends: 1753 [2018-11-07 03:40:42,388 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:40:42,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-11-07 03:40:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-11-07 03:40:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 03:40:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-11-07 03:40:42,484 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 131 [2018-11-07 03:40:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:42,484 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-11-07 03:40:42,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:40:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-11-07 03:40:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:40:42,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:42,499 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, 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] [2018-11-07 03:40:42,499 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:42,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash -708902120, now seen corresponding path program 1 times [2018-11-07 03:40:42,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:42,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:42,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:42,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:42,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:42,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:42,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:40:42,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:42,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:40:42,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:40:42,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:40:42,961 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-11-07 03:40:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:49,652 INFO L93 Difference]: Finished difference Result 5406 states and 9994 transitions. [2018-11-07 03:40:49,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:40:49,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 03:40:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:49,687 INFO L225 Difference]: With dead ends: 5406 [2018-11-07 03:40:49,687 INFO L226 Difference]: Without dead ends: 3679 [2018-11-07 03:40:49,713 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:40:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2018-11-07 03:40:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3590. [2018-11-07 03:40:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2018-11-07 03:40:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5510 transitions. [2018-11-07 03:40:49,886 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5510 transitions. Word has length 132 [2018-11-07 03:40:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:49,887 INFO L480 AbstractCegarLoop]: Abstraction has 3590 states and 5510 transitions. [2018-11-07 03:40:49,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:40:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5510 transitions. [2018-11-07 03:40:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 03:40:49,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:49,893 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, 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] [2018-11-07 03:40:49,893 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:49,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:49,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1451874528, now seen corresponding path program 1 times [2018-11-07 03:40:49,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:49,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:49,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:49,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:49,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:50,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:50,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:40:50,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:50,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:40:50,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:40:50,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:40:50,152 INFO L87 Difference]: Start difference. First operand 3590 states and 5510 transitions. Second operand 6 states. [2018-11-07 03:40:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:54,887 INFO L93 Difference]: Finished difference Result 10274 states and 16969 transitions. [2018-11-07 03:40:54,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:40:54,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 03:40:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:54,938 INFO L225 Difference]: With dead ends: 10274 [2018-11-07 03:40:54,938 INFO L226 Difference]: Without dead ends: 6999 [2018-11-07 03:40:54,974 INFO L604 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 [2018-11-07 03:40:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2018-11-07 03:40:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6946. [2018-11-07 03:40:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6946 states. [2018-11-07 03:40:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10092 transitions. [2018-11-07 03:40:55,177 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10092 transitions. Word has length 136 [2018-11-07 03:40:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:55,178 INFO L480 AbstractCegarLoop]: Abstraction has 6946 states and 10092 transitions. [2018-11-07 03:40:55,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:40:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10092 transitions. [2018-11-07 03:40:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 03:40:55,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:55,183 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, 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] [2018-11-07 03:40:55,184 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:55,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:55,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1453868313, now seen corresponding path program 1 times [2018-11-07 03:40:55,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:55,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:55,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:55,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:55,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:55,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:40:55,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:40:55,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-11-07 03:40:55,436 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:40:55,525 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:40:55,525 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:40:57,721 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:41:03,697 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:41:03,699 INFO L272 AbstractInterpreter]: Visited 103 different actions 296 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:41:03,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:41:03,744 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:41:06,241 INFO L227 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 83.22% of their original sizes. [2018-11-07 03:41:06,241 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:41:56,475 INFO L415 sIntCurrentIteration]: We unified 156 AI predicates to 156 [2018-11-07 03:41:56,475 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:41:56,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:41:56,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-07 03:41:56,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:41:56,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 03:41:56,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 03:41:56,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-11-07 03:41:56,478 INFO L87 Difference]: Start difference. First operand 6946 states and 10092 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 03:44:16,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 03:44:16,602 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:44:16,607 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:44:16,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:16 BoogieIcfgContainer [2018-11-07 03:44:16,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:44:16,608 INFO L168 Benchmark]: Toolchain (without parser) took 242185.83 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -49.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,610 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:16,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1325.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 250.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,612 INFO L168 Benchmark]: Boogie Preprocessor took 183.96 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,613 INFO L168 Benchmark]: RCFGBuilder took 8067.98 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 283.3 MB). Peak memory consumption was 283.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,614 INFO L168 Benchmark]: TraceAbstraction took 232352.22 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 422.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:16,620 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1325.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 250.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.96 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8067.98 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 283.3 MB). Peak memory consumption was 283.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232352.22 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 422.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (6946states) and FLOYD_HOARE automaton (currently 20 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (2096 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 232.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 168.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 684 SDtfs, 7861 SDslu, 952 SDs, 0 SdLazy, 12737 SolverSat, 2449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 201 GetRequests, 93 SyntacticMatches, 62 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 55.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6946occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9940774804905242 AbsIntWeakeningRatio, 0.1282051282051282 AbsIntAvgWeakeningVarsNumRemoved, 406.81410256410254 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 517 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 617 NumberOfCodeBlocks, 617 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 336543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 162/216 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown