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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:09:43,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:09:43,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:09:43,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:09:43,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:09:43,325 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:09:43,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:09:43,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:09:43,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:09:43,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:09:43,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:09:43,337 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:09:43,338 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:09:43,339 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:09:43,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:09:43,344 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:09:43,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:09:43,355 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:09:43,357 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:09:43,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:09:43,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:09:43,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:09:43,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:09:43,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:09:43,368 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:09:43,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:09:43,370 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:09:43,371 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:09:43,371 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:09:43,372 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:09:43,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:09:43,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:09:43,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:09:43,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:09:43,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:09:43,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:09:43,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 12:09:43,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:09:43,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:09:43,399 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:09:43,399 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:09:43,399 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:09:43,400 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:09:43,400 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:09:43,401 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:09:43,401 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:09:43,401 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:09:43,401 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:09:43,402 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:09:43,402 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:09:43,402 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:09:43,403 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:09:43,403 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:09:43,403 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:09:43,403 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:09:43,403 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:09:43,404 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:09:43,404 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:09:43,404 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:09:43,404 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:09:43,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:09:43,405 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:09:43,405 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:09:43,405 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:09:43,405 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:09:43,406 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:09:43,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:09:43,406 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:09:43,406 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:09:43,406 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:09:43,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:09:43,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:09:43,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:09:43,496 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:09:43,497 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:09:43,498 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-08-07 12:09:43,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e65549a5/1c395bc481c942558a9a0861f95205ca/FLAG305b17a3b [2018-08-07 12:09:44,210 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:09:44,213 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-08-07 12:09:44,234 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e65549a5/1c395bc481c942558a9a0861f95205ca/FLAG305b17a3b [2018-08-07 12:09:44,255 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e65549a5/1c395bc481c942558a9a0861f95205ca [2018-08-07 12:09:44,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:09:44,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:09:44,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:09:44,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:09:44,280 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:09:44,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:09:44" (1/1) ... [2018-08-07 12:09:44,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319e9e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:44, skipping insertion in model container [2018-08-07 12:09:44,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:09:44" (1/1) ... [2018-08-07 12:09:44,536 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:09:44,968 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:09:44,986 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:09:45,162 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:09:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45 WrapperNode [2018-08-07 12:09:45,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:09:45,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:09:45,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:09:45,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:09:45,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:09:45,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:09:45,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:09:45,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:09:45,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (1/1) ... [2018-08-07 12:09:45,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:09:45,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:09:45,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:09:45,870 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:09:45,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (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 [2018-08-07 12:09:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:09:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:09:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 12:09:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 12:09:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:09:45,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:09:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:09:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:09:51,180 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:09:51,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:09:51 BoogieIcfgContainer [2018-08-07 12:09:51,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:09:51,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:09:51,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:09:51,185 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:09:51,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:09:44" (1/3) ... [2018-08-07 12:09:51,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be5da77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:09:51, skipping insertion in model container [2018-08-07 12:09:51,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:09:45" (2/3) ... [2018-08-07 12:09:51,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be5da77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:09:51, skipping insertion in model container [2018-08-07 12:09:51,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:09:51" (3/3) ... [2018-08-07 12:09:51,189 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label05_true-unreach-call.c [2018-08-07 12:09:51,200 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:09:51,209 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:09:51,264 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:09:51,265 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:09:51,266 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:09:51,266 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:09:51,266 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:09:51,266 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:09:51,266 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:09:51,267 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:09:51,267 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:09:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-08-07 12:09:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-08-07 12:09:51,310 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:09:51,311 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:09:51,313 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:09:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 620538673, now seen corresponding path program 1 times [2018-08-07 12:09:51,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:09:51,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:09:51,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:09:51,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:09:51,386 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:09:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:09:51,951 WARN L170 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-08-07 12:09:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:09:51,975 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:09:51,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:09:51,976 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:09:51,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:09:51,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:09:51,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:09:52,002 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-08-07 12:09:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:09:55,842 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-08-07 12:09:55,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:09:55,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-08-07 12:09:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:09:55,870 INFO L225 Difference]: With dead ends: 985 [2018-08-07 12:09:55,870 INFO L226 Difference]: Without dead ends: 686 [2018-08-07 12:09:55,881 INFO L603 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 [2018-08-07 12:09:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-08-07 12:09:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-08-07 12:09:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-08-07 12:09:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-08-07 12:09:55,992 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 71 [2018-08-07 12:09:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:09:55,993 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-08-07 12:09:55,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:09:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-08-07 12:09:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-08-07 12:09:56,009 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:09:56,009 INFO L376 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, 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] [2018-08-07 12:09:56,009 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:09:56,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2040216429, now seen corresponding path program 1 times [2018-08-07 12:09:56,010 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:09:56,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:09:56,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:09:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:09:56,012 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:09:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:09:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:09:56,383 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:09:56,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:09:56,383 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:09:56,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:09:56,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:09:56,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:09:56,386 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-08-07 12:10:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:10:02,694 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-08-07 12:10:02,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:10:02,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-08-07 12:10:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:10:02,719 INFO L225 Difference]: With dead ends: 2339 [2018-08-07 12:10:02,719 INFO L226 Difference]: Without dead ends: 1659 [2018-08-07 12:10:02,724 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:10:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-08-07 12:10:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-08-07 12:10:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-08-07 12:10:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-08-07 12:10:02,821 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 152 [2018-08-07 12:10:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:10:02,822 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-08-07 12:10:02,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:10:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-08-07 12:10:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-08-07 12:10:02,837 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:10:02,837 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:10:02,838 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:10:02,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1556450923, now seen corresponding path program 1 times [2018-08-07 12:10:02,838 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:10:02,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:02,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:02,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:02,840 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:10:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:10:03,181 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:10:03,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:10:03,182 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:10:03,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:10:03,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:10:03,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:10:03,187 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 4 states. [2018-08-07 12:10:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:10:06,982 INFO L93 Difference]: Finished difference Result 6237 states and 9313 transitions. [2018-08-07 12:10:06,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:10:06,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-08-07 12:10:06,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:10:07,018 INFO L225 Difference]: With dead ends: 6237 [2018-08-07 12:10:07,019 INFO L226 Difference]: Without dead ends: 4601 [2018-08-07 12:10:07,033 INFO L603 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 [2018-08-07 12:10:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2018-08-07 12:10:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4571. [2018-08-07 12:10:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4571 states. [2018-08-07 12:10:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 6363 transitions. [2018-08-07 12:10:07,186 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 6363 transitions. Word has length 203 [2018-08-07 12:10:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:10:07,187 INFO L480 AbstractCegarLoop]: Abstraction has 4571 states and 6363 transitions. [2018-08-07 12:10:07,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:10:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 6363 transitions. [2018-08-07 12:10:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-08-07 12:10:07,203 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:10:07,203 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:10:07,204 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:10:07,204 INFO L82 PathProgramCache]: Analyzing trace with hash -937553027, now seen corresponding path program 1 times [2018-08-07 12:10:07,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:10:07,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:07,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:07,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:07,205 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:10:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:07,509 WARN L170 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:10:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 128 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:10:07,591 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:10:07,592 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:10:07,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:07,603 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:10:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:07,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:10:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-08-07 12:10:08,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:10:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 128 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:10:09,272 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:10:09,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 12:10:09,272 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:10:09,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:10:09,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:10:09,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:10:09,274 INFO L87 Difference]: Start difference. First operand 4571 states and 6363 transitions. Second operand 5 states. [2018-08-07 12:10:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:10:13,674 INFO L93 Difference]: Finished difference Result 13194 states and 19257 transitions. [2018-08-07 12:10:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:10:13,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2018-08-07 12:10:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:10:13,735 INFO L225 Difference]: With dead ends: 13194 [2018-08-07 12:10:13,735 INFO L226 Difference]: Without dead ends: 8818 [2018-08-07 12:10:13,773 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-08-07 12:10:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8818 states. [2018-08-07 12:10:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8818 to 8728. [2018-08-07 12:10:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8728 states. [2018-08-07 12:10:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 11798 transitions. [2018-08-07 12:10:14,021 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 11798 transitions. Word has length 239 [2018-08-07 12:10:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:10:14,021 INFO L480 AbstractCegarLoop]: Abstraction has 8728 states and 11798 transitions. [2018-08-07 12:10:14,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:10:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 11798 transitions. [2018-08-07 12:10:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-08-07 12:10:14,042 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:10:14,042 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:10:14,042 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:10:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1493717004, now seen corresponding path program 1 times [2018-08-07 12:10:14,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:10:14,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:14,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:14,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:14,044 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:10:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:14,747 WARN L170 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-08-07 12:10:15,277 WARN L170 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-08-07 12:10:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 128 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:10:15,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:10:15,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:10:15,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:15,587 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:10:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:15,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:10:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-08-07 12:10:16,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:10:16,331 WARN L170 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-08-07 12:10:16,835 WARN L170 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-08-07 12:10:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 128 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:10:17,414 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:10:17,414 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-08-07 12:10:17,414 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:10:17,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:10:17,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:10:17,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:10:17,416 INFO L87 Difference]: Start difference. First operand 8728 states and 11798 transitions. Second operand 5 states. [2018-08-07 12:10:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:10:21,364 INFO L93 Difference]: Finished difference Result 21995 states and 29736 transitions. [2018-08-07 12:10:21,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:10:21,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-08-07 12:10:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:10:21,428 INFO L225 Difference]: With dead ends: 21995 [2018-08-07 12:10:21,428 INFO L226 Difference]: Without dead ends: 13462 [2018-08-07 12:10:21,462 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-08-07 12:10:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2018-08-07 12:10:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 13318. [2018-08-07 12:10:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13318 states. [2018-08-07 12:10:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13318 states to 13318 states and 17846 transitions. [2018-08-07 12:10:21,793 INFO L78 Accepts]: Start accepts. Automaton has 13318 states and 17846 transitions. Word has length 240 [2018-08-07 12:10:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:10:21,793 INFO L480 AbstractCegarLoop]: Abstraction has 13318 states and 17846 transitions. [2018-08-07 12:10:21,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:10:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13318 states and 17846 transitions. [2018-08-07 12:10:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-08-07 12:10:21,811 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:10:21,812 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:10:21,812 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:10:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 22969815, now seen corresponding path program 1 times [2018-08-07 12:10:21,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:10:21,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:21,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:21,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:10:21,814 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:10:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:22,307 WARN L170 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-08-07 12:10:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 131 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-08-07 12:10:23,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:10:23,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:10:23,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:23,114 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:10:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:23,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:10:38,709 WARN L170 SmtUtils]: Spent 15.13 s on a formula simplification. DAG size of input: 152 DAG size of output: 28 [2018-08-07 12:10:47,569 WARN L170 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2018-08-07 12:10:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 129 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:10:47,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:10:48,194 WARN L170 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-08-07 12:10:48,746 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2018-08-07 12:10:49,590 WARN L170 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2018-08-07 12:10:49,596 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:49,734 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:49,839 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,003 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,082 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,137 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,245 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,340 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,396 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,592 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,771 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,878 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,927 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:50,976 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,037 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,213 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,263 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,317 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,455 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:51,865 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,263 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,570 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,625 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,698 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,748 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,799 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,862 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,913 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:52,993 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,125 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,201 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,254 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,324 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,401 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,453 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,503 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,554 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,605 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,655 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,722 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,773 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:53,828 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,191 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,242 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,293 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,363 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,411 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,464 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,552 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,602 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,651 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,701 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,751 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,801 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,855 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,911 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:54,967 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,026 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,075 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,155 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,205 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,258 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,306 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,354 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,409 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,459 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,508 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,769 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,825 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,904 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:55,955 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,004 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,088 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,159 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,222 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,271 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,328 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,382 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,432 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,485 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,536 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,586 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,641 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,691 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,747 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,798 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:56,848 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-08-07 12:10:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:10:57,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:10:57,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:10:57,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:10:57,960 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:10:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:10:58,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:11:10,494 WARN L170 SmtUtils]: Spent 11.76 s on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2018-08-07 12:11:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 129 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:11:10,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:11:10,930 WARN L170 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2018-08-07 12:11:11,510 WARN L170 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 40 [2018-08-07 12:11:11,562 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 135 [2018-08-07 12:11:12,368 WARN L172 XnfTransformerHelper]: Simplifying conjuction of 8800 disjunctions. This might take some time... [2018-08-07 12:11:12,415 INFO L188 XnfTransformerHelper]: Simplified to conjuction of 13 disjunctions. [2018-08-07 12:11:12,685 WARN L170 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2018-08-07 12:11:12,687 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:12,700 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 69 [2018-08-07 12:11:13,703 WARN L172 XnfTransformerHelper]: Simplifying conjuction of 10359 disjunctions. This might take some time... [2018-08-07 12:11:13,828 INFO L188 XnfTransformerHelper]: Simplified to conjuction of 60 disjunctions. [2018-08-07 12:11:14,610 WARN L170 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 79 [2018-08-07 12:11:14,613 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,618 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,632 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,637 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,651 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,656 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,670 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,675 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,689 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,694 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,709 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,714 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,729 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,734 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,749 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,754 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,769 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,774 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,789 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,794 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,809 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,814 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,828 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,834 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,849 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,854 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,868 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,873 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,888 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,894 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,908 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,913 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,928 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,933 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,947 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,953 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,963 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,967 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,977 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,981 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:14,991 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:14,995 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,009 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,013 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,027 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,032 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,046 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,051 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,065 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,070 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,083 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,088 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,102 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,107 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,120 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,125 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,138 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,143 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,158 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,163 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,176 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,181 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,195 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,199 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,214 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,220 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,235 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,240 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,255 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,260 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,274 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,280 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,295 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,300 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,315 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,320 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,334 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,339 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,353 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,358 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,372 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,377 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,391 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,395 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,410 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,414 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,428 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,433 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,447 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,452 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,465 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,470 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,484 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,488 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,498 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,503 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,516 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,521 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,534 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,538 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,548 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,552 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,565 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,570 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,583 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,588 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,600 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,604 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,614 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,618 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,632 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,637 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,650 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,654 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,668 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,672 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,685 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,689 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,703 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,708 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,721 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,725 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,739 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,744 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,758 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,762 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,776 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,781 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,795 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,799 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,813 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,818 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,833 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,837 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,851 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,856 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,870 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,874 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,888 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,893 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,907 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,912 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,925 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,930 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,944 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,948 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,962 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,966 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,980 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:15,984 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:15,998 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,003 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,016 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,021 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,035 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,040 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,053 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,058 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,071 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,076 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,091 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,098 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,113 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,119 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,136 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,143 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,159 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,164 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,178 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,183 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,198 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,203 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,218 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-08-07 12:11:16,223 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-08-07 12:11:16,594 WARN L170 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-08-07 12:11:16,717 WARN L170 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-08-07 12:11:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:11:17,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:11:17,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6, 8, 6] total 27 [2018-08-07 12:11:17,500 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:11:17,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-08-07 12:11:17,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-08-07 12:11:17,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2018-08-07 12:11:17,501 INFO L87 Difference]: Start difference. First operand 13318 states and 17846 transitions. Second operand 15 states. [2018-08-07 12:11:21,272 WARN L170 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2018-08-07 12:11:24,578 WARN L170 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-08-07 12:12:25,718 WARN L170 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 59 [2018-08-07 12:12:30,567 WARN L170 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 35 DAG size of output: 14 [2018-08-07 12:12:41,165 WARN L170 SmtUtils]: Spent 6.30 s on a formula simplification that was a NOOP. DAG size: 82 [2018-08-07 12:12:49,289 WARN L170 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-08-07 12:13:09,085 WARN L170 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 Received shutdown request... [2018-08-07 12:14:05,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-08-07 12:14:05,634 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:14:05,638 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:14:05,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:14:05 BoogieIcfgContainer [2018-08-07 12:14:05,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:14:05,640 INFO L168 Benchmark]: Toolchain (without parser) took 261372.20 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -984.4 MB). Peak memory consumption was 490.9 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,641 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 12:14:05,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 989.44 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 190.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,642 INFO L168 Benchmark]: Boogie Preprocessor took 417.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.9 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,643 INFO L168 Benchmark]: RCFGBuilder took 5311.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 192.7 MB). Peak memory consumption was 192.7 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,644 INFO L168 Benchmark]: TraceAbstraction took 254456.83 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 676.3 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -351.3 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. [2018-08-07 12:14:05,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 989.44 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 190.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 417.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.9 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5311.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 192.7 MB). Peak memory consumption was 192.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254456.83 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 676.3 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -351.3 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (13318states) and FLOYD_HOARE automaton (currently 47 states, 15 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 66 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 254.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 190.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1200 SDtfs, 8804 SDslu, 1751 SDs, 0 SdLazy, 13877 SolverSat, 2257 SolverUnsat, 55 SolverUnknown, 0 SolverNotchecked, 156.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2179 GetRequests, 1983 SyntacticMatches, 98 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 78.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13318occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 281 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 60.9s InterpolantComputationTime, 2233 NumberOfCodeBlocks, 2233 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3264 ConstructedInterpolants, 205 QuantifiedInterpolants, 11282881 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1860 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 1855/2452 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-14-05-663.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-14-05-663.csv Completed graceful shutdown