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_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:39:38,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:39:38,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:39:38,294 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:39:38,294 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:39:38,295 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:39:38,297 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:39:38,299 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:39:38,302 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:39:38,303 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:39:38,312 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:39:38,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:39:38,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:39:38,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:39:38,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:39:38,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:39:38,322 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:39:38,323 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:39:38,325 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:39:38,327 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:39:38,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:39:38,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:39:38,331 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:39:38,331 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:39:38,332 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:39:38,333 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:39:38,334 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:39:38,334 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:39:38,335 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:39:38,336 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:39:38,336 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:39:38,337 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:39:38,337 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:39:38,337 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:39:38,338 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:39:38,339 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:39:38,339 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 [2018-09-10 11:39:38,356 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:39:38,356 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:39:38,357 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:39:38,357 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:39:38,358 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:39:38,358 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:39:38,358 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:39:38,358 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:39:38,359 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:39:38,359 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:39:38,359 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:39:38,360 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:39:38,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:39:38,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:39:38,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:39:38,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:39:38,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:39:38,361 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:39:38,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:39:38,361 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:39:38,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:39:38,362 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:39:38,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:39:38,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:39:38,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:39:38,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:39:38,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:39:38,363 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:39:38,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:39:38,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:39:38,364 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:39:38,364 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:39:38,364 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:39:38,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:39:38,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:39:38,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:39:38,430 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:39:38,430 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:39:38,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-10 11:39:38,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e496b626/aab29295e27b42308c26132d3195d1e4/FLAG9689cab60 [2018-09-10 11:39:39,122 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:39:39,123 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-09-10 11:39:39,152 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e496b626/aab29295e27b42308c26132d3195d1e4/FLAG9689cab60 [2018-09-10 11:39:39,176 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e496b626/aab29295e27b42308c26132d3195d1e4 [2018-09-10 11:39:39,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:39:39,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:39:39,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:39:39,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:39:39,203 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:39:39,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:39:39" (1/1) ... [2018-09-10 11:39:39,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cb0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:39, skipping insertion in model container [2018-09-10 11:39:39,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:39:39" (1/1) ... [2018-09-10 11:39:39,447 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:39:39,880 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:39:39,897 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:39:40,199 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:39:40,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40 WrapperNode [2018-09-10 11:39:40,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:39:40,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:39:40,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:39:40,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:39:40,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:39:40,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:39:40,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:39:40,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:39:40,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (1/1) ... [2018-09-10 11:39:40,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:39:40,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:39:40,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:39:40,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:39:40,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (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 [2018-09-10 11:39:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:39:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:39:40,937 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 [2018-09-10 11:39:40,937 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 [2018-09-10 11:39:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:39:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:39:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:39:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:39:46,177 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:39:46,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:39:46 BoogieIcfgContainer [2018-09-10 11:39:46,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:39:46,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:39:46,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:39:46,183 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:39:46,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:39:39" (1/3) ... [2018-09-10 11:39:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dd54d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:39:46, skipping insertion in model container [2018-09-10 11:39:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:39:40" (2/3) ... [2018-09-10 11:39:46,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dd54d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:39:46, skipping insertion in model container [2018-09-10 11:39:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:39:46" (3/3) ... [2018-09-10 11:39:46,187 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54_true-unreach-call.c [2018-09-10 11:39:46,197 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:39:46,205 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:39:46,262 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:39:46,263 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:39:46,263 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:39:46,263 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:39:46,263 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:39:46,264 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:39:46,264 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:39:46,264 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:39:46,264 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:39:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:39:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-10 11:39:46,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:46,306 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] [2018-09-10 11:39:46,307 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]=== [2018-09-10 11:39:46,314 INFO L82 PathProgramCache]: Analyzing trace with hash -639357604, now seen corresponding path program 1 times [2018-09-10 11:39:46,317 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:46,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:46,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:46,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:46,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:46,825 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:39:46,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:39:46,826 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:46,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:39:46,848 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:39:46,849 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:39:46,852 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-10 11:39:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:50,379 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-09-10 11:39:50,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:39:50,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-10 11:39:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:50,407 INFO L225 Difference]: With dead ends: 979 [2018-09-10 11:39:50,408 INFO L226 Difference]: Without dead ends: 680 [2018-09-10 11:39:50,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:39:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-09-10 11:39:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-09-10 11:39:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-09-10 11:39:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-09-10 11:39:50,505 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 44 [2018-09-10 11:39:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:50,506 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-09-10 11:39:50,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:39:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-09-10 11:39:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-10 11:39:50,513 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:50,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:50,514 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]=== [2018-09-10 11:39:50,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1151248341, now seen corresponding path program 1 times [2018-09-10 11:39:50,514 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:50,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:50,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:50,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:50,516 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:50,915 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:39:50,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:39:50,915 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:50,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:39:50,917 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:39:50,918 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:39:50,918 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-09-10 11:39:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:57,293 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-09-10 11:39:57,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:39:57,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-09-10 11:39:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:57,308 INFO L225 Difference]: With dead ends: 1555 [2018-09-10 11:39:57,308 INFO L226 Difference]: Without dead ends: 1077 [2018-09-10 11:39:57,312 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 [2018-09-10 11:39:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-09-10 11:39:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-09-10 11:39:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-09-10 11:39:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-09-10 11:39:57,379 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 117 [2018-09-10 11:39:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:57,380 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-09-10 11:39:57,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:39:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-09-10 11:39:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-10 11:39:57,391 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:57,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:57,392 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]=== [2018-09-10 11:39:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash 731087552, now seen corresponding path program 1 times [2018-09-10 11:39:57,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:57,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:57,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:57,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:57,394 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:57,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:39:57,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:39:57,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:57,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:39:57,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:39:57,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:39:57,763 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 7 states. [2018-09-10 11:40:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:04,627 INFO L93 Difference]: Finished difference Result 2979 states and 4525 transitions. [2018-09-10 11:40:04,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:40:04,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2018-09-10 11:40:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:04,646 INFO L225 Difference]: With dead ends: 2979 [2018-09-10 11:40:04,646 INFO L226 Difference]: Without dead ends: 1922 [2018-09-10 11:40:04,653 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:40:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-10 11:40:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1813. [2018-09-10 11:40:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2018-09-10 11:40:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2564 transitions. [2018-09-10 11:40:04,730 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2564 transitions. Word has length 118 [2018-09-10 11:40:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:04,731 INFO L480 AbstractCegarLoop]: Abstraction has 1813 states and 2564 transitions. [2018-09-10 11:40:04,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:40:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2564 transitions. [2018-09-10 11:40:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-10 11:40:04,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:04,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:04,735 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]=== [2018-09-10 11:40:04,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1842858103, now seen corresponding path program 1 times [2018-09-10 11:40:04,736 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:04,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:04,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:04,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:04,737 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:05,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:05,555 INFO L197 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 [2018-09-10 11:40:05,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:05,571 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:05,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:05,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:06,267 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:40:06,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-10 11:40:06,268 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:06,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:06,269 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:06,269 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:40:06,272 INFO L87 Difference]: Start difference. First operand 1813 states and 2564 transitions. Second operand 3 states. [2018-09-10 11:40:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:08,472 INFO L93 Difference]: Finished difference Result 4033 states and 5956 transitions. [2018-09-10 11:40:08,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:40:08,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-09-10 11:40:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:08,492 INFO L225 Difference]: With dead ends: 4033 [2018-09-10 11:40:08,492 INFO L226 Difference]: Without dead ends: 2226 [2018-09-10 11:40:08,500 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:40:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2018-09-10 11:40:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2217. [2018-09-10 11:40:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2018-09-10 11:40:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3161 transitions. [2018-09-10 11:40:08,563 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3161 transitions. Word has length 176 [2018-09-10 11:40:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:08,563 INFO L480 AbstractCegarLoop]: Abstraction has 2217 states and 3161 transitions. [2018-09-10 11:40:08,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:40:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3161 transitions. [2018-09-10 11:40:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-10 11:40:08,568 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:08,568 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:08,568 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]=== [2018-09-10 11:40:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1021024169, now seen corresponding path program 1 times [2018-09-10 11:40:08,569 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:08,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:08,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:08,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:08,570 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:40:08,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:08,962 INFO L197 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 [2018-09-10 11:40:08,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:08,971 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:09,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:11,311 WARN L1032 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 Int)) (let ((.cse1 (* 9 v_prenex_1))) (let ((.cse2 (div .cse1 10))) (let ((.cse0 (mod (+ .cse2 30) 90))) (and (not (= 0 .cse0)) (not (= (mod .cse1 10) 0)) (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 42) .cse0) (< .cse1 0) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_1) (< (+ .cse2 58980) 0)))))) (exists ((v_prenex_3 Int)) (let ((.cse4 (* 9 v_prenex_3))) (let ((.cse3 (div .cse4 10))) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_3) (<= 0 (+ .cse3 58979)) (<= 0 .cse4) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod (+ .cse3 29) 90) 48)))))) (exists ((v_prenex_2 Int)) (let ((.cse6 (* 9 v_prenex_2))) (let ((.cse7 (div .cse6 10))) (let ((.cse5 (mod (+ .cse7 29) 90))) (and (not (= .cse5 0)) (= (mod .cse6 10) 0) (< (+ .cse7 58979) 0) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_2) (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 42) .cse5)))))) (exists ((v_prenex_4 Int)) (let ((.cse9 (* 9 v_prenex_4))) (let ((.cse8 (mod (+ (div .cse9 10) 29) 90))) (and (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse8 48)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_4) (= .cse8 0) (= (mod .cse9 10) 0))))) (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_486 Int)) (let ((.cse10 (* 9 v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_486))) (let ((.cse11 (mod (+ (div .cse10 10) 29) 90))) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_486) (<= 0 .cse10) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse11 48)) (= .cse11 0))))) (exists ((v_prenex_5 Int)) (let ((.cse13 (* 9 v_prenex_5))) (let ((.cse12 (div .cse13 10))) (and (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod (+ .cse12 29) 90) 48)) (<= 0 (+ .cse12 58979)) (= (mod .cse13 10) 0) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_5))))) (exists ((v_prenex_7 Int)) (let ((.cse14 (* 9 v_prenex_7))) (let ((.cse15 (div .cse14 10))) (let ((.cse16 (mod (+ .cse15 29) 90))) (and (<= 0 .cse14) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_7) (< (+ .cse15 58979) 0) (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 42) .cse16) (not (= .cse16 0))))))) (exists ((v_prenex_6 Int)) (let ((.cse17 (* 9 v_prenex_6))) (let ((.cse18 (mod (+ (div .cse17 10) 30) 90))) (and (< .cse17 0) (not (= (mod .cse17 10) 0)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_6) (= 0 .cse18) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse18 48)))))) (exists ((v_prenex_8 Int)) (let ((.cse19 (* 9 v_prenex_8))) (let ((.cse20 (div .cse19 10))) (and (not (= (mod .cse19 10) 0)) (<= 0 (+ .cse20 58980)) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod (+ .cse20 30) 90) 48)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_8) (< .cse19 0)))))) is different from true [2018-09-10 11:40:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 71 trivial. 2 not checked. [2018-09-10 11:40:13,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:40:13,939 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:40:13,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-10 11:40:13,939 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:13,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:13,940 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:13,940 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2018-09-10 11:40:13,940 INFO L87 Difference]: Start difference. First operand 2217 states and 3161 transitions. Second operand 3 states. [2018-09-10 11:40:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:15,890 INFO L93 Difference]: Finished difference Result 5467 states and 8136 transitions. [2018-09-10 11:40:15,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:40:15,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-09-10 11:40:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:15,908 INFO L225 Difference]: With dead ends: 5467 [2018-09-10 11:40:15,908 INFO L226 Difference]: Without dead ends: 3256 [2018-09-10 11:40:15,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 468 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2018-09-10 11:40:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2018-09-10 11:40:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3222. [2018-09-10 11:40:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3222 states. [2018-09-10 11:40:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4674 transitions. [2018-09-10 11:40:16,015 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4674 transitions. Word has length 235 [2018-09-10 11:40:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:16,018 INFO L480 AbstractCegarLoop]: Abstraction has 3222 states and 4674 transitions. [2018-09-10 11:40:16,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:40:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4674 transitions. [2018-09-10 11:40:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-10 11:40:16,027 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:16,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:16,028 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]=== [2018-09-10 11:40:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1339442454, now seen corresponding path program 1 times [2018-09-10 11:40:16,028 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:16,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:16,029 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-10 11:40:16,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:16,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:40:16,368 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:16,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:40:16,369 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:40:16,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:40:16,371 INFO L87 Difference]: Start difference. First operand 3222 states and 4674 transitions. Second operand 4 states. [2018-09-10 11:40:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:20,786 INFO L93 Difference]: Finished difference Result 9041 states and 13700 transitions. [2018-09-10 11:40:20,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:40:20,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-09-10 11:40:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:20,815 INFO L225 Difference]: With dead ends: 9041 [2018-09-10 11:40:20,816 INFO L226 Difference]: Without dead ends: 5825 [2018-09-10 11:40:20,834 INFO L604 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 [2018-09-10 11:40:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2018-09-10 11:40:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5493. [2018-09-10 11:40:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5493 states. [2018-09-10 11:40:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 7977 transitions. [2018-09-10 11:40:20,983 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 7977 transitions. Word has length 256 [2018-09-10 11:40:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:20,984 INFO L480 AbstractCegarLoop]: Abstraction has 5493 states and 7977 transitions. [2018-09-10 11:40:20,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:40:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 7977 transitions. [2018-09-10 11:40:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-10 11:40:20,994 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:20,995 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:20,995 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1846592885, now seen corresponding path program 1 times [2018-09-10 11:40:21,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:21,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:21,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:21,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:21,002 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 11:40:21,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:21,353 INFO L197 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 [2018-09-10 11:40:21,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:21,361 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:21,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:21,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:21,865 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:40:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:22,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:22,309 INFO L197 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 [2018-09-10 11:40:22,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:22,325 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:22,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:22,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:22,758 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:40:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:23,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:40:23,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 14 [2018-09-10 11:40:23,199 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:40:23,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 11:40:23,200 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 11:40:23,200 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:40:23,201 INFO L87 Difference]: Start difference. First operand 5493 states and 7977 transitions. Second operand 12 states. [2018-09-10 11:40:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:46,746 INFO L93 Difference]: Finished difference Result 21559 states and 34598 transitions. [2018-09-10 11:40:46,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-10 11:40:46,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 258 [2018-09-10 11:40:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:46,831 INFO L225 Difference]: With dead ends: 21559 [2018-09-10 11:40:46,831 INFO L226 Difference]: Without dead ends: 16072 [2018-09-10 11:40:46,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=938, Invalid=5542, Unknown=0, NotChecked=0, Total=6480 [2018-09-10 11:40:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16072 states. [2018-09-10 11:40:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16072 to 14912. [2018-09-10 11:40:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14912 states. [2018-09-10 11:40:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14912 states to 14912 states and 20864 transitions. [2018-09-10 11:40:47,358 INFO L78 Accepts]: Start accepts. Automaton has 14912 states and 20864 transitions. Word has length 258 [2018-09-10 11:40:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:47,358 INFO L480 AbstractCegarLoop]: Abstraction has 14912 states and 20864 transitions. [2018-09-10 11:40:47,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 11:40:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 14912 states and 20864 transitions. [2018-09-10 11:40:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-10 11:40:47,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:47,376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:47,376 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1355614083, now seen corresponding path program 1 times [2018-09-10 11:40:47,377 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:47,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:47,378 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 11:40:48,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:48,100 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:48,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:48,108 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:48,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:51,017 WARN L175 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 17 [2018-09-10 11:40:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 11:40:51,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 11:40:51,324 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:40:51,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-10 11:40:51,324 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:51,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:40:51,325 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:40:51,325 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2018-09-10 11:40:51,326 INFO L87 Difference]: Start difference. First operand 14912 states and 20864 transitions. Second operand 3 states. [2018-09-10 11:40:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:53,485 INFO L93 Difference]: Finished difference Result 38208 states and 56498 transitions. [2018-09-10 11:40:53,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:40:53,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-09-10 11:40:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:53,595 INFO L225 Difference]: With dead ends: 38208 [2018-09-10 11:40:53,595 INFO L226 Difference]: Without dead ends: 23682 [2018-09-10 11:40:53,643 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 576 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2018-09-10 11:40:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23682 states. [2018-09-10 11:40:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23682 to 23206. [2018-09-10 11:40:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23206 states. [2018-09-10 11:40:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23206 states to 23206 states and 32947 transitions. [2018-09-10 11:40:54,222 INFO L78 Accepts]: Start accepts. Automaton has 23206 states and 32947 transitions. Word has length 289 [2018-09-10 11:40:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:54,223 INFO L480 AbstractCegarLoop]: Abstraction has 23206 states and 32947 transitions. [2018-09-10 11:40:54,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:40:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23206 states and 32947 transitions. [2018-09-10 11:40:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-10 11:40:54,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:54,290 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:54,290 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:54,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1994193760, now seen corresponding path program 1 times [2018-09-10 11:40:54,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:54,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:54,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:54,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:54,292 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:54,872 WARN L175 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-09-10 11:40:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 9 proven. 68 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-10 11:40:55,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:55,443 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:55,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:55,457 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:55,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-10 11:40:55,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-10 11:40:56,440 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:40:56,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-10 11:40:56,440 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:56,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:40:56,441 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:40:56,441 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:40:56,441 INFO L87 Difference]: Start difference. First operand 23206 states and 32947 transitions. Second operand 6 states. [2018-09-10 11:40:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:59,684 INFO L93 Difference]: Finished difference Result 45838 states and 66446 transitions. [2018-09-10 11:40:59,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:40:59,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 337 [2018-09-10 11:40:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:59,784 INFO L225 Difference]: With dead ends: 45838 [2018-09-10 11:40:59,784 INFO L226 Difference]: Without dead ends: 29106 [2018-09-10 11:40:59,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:40:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29106 states. [2018-09-10 11:41:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29106 to 28336. [2018-09-10 11:41:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28336 states. [2018-09-10 11:41:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28336 states to 28336 states and 40563 transitions. [2018-09-10 11:41:00,663 INFO L78 Accepts]: Start accepts. Automaton has 28336 states and 40563 transitions. Word has length 337 [2018-09-10 11:41:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:00,664 INFO L480 AbstractCegarLoop]: Abstraction has 28336 states and 40563 transitions. [2018-09-10 11:41:00,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:41:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 28336 states and 40563 transitions. [2018-09-10 11:41:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-09-10 11:41:00,775 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:00,776 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:00,776 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:00,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1258701310, now seen corresponding path program 1 times [2018-09-10 11:41:00,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:00,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:00,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 326 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 11:41:01,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:01,616 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:01,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:01,631 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:01,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:41:02,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-10 11:41:02,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:02,813 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:02,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:02,834 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:03,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 113 proven. 219 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 11:41:03,436 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 328 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 11:41:04,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:04,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-10 11:41:04,173 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:04,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:41:04,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:41:04,175 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:41:04,176 INFO L87 Difference]: Start difference. First operand 28336 states and 40563 transitions. Second operand 6 states. [2018-09-10 11:41:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:06,214 INFO L93 Difference]: Finished difference Result 55195 states and 81896 transitions. [2018-09-10 11:41:06,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:41:06,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 428 [2018-09-10 11:41:06,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:06,311 INFO L225 Difference]: With dead ends: 55195 [2018-09-10 11:41:06,311 INFO L226 Difference]: Without dead ends: 25047 [2018-09-10 11:41:06,392 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 1704 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:41:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25047 states. [2018-09-10 11:41:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25047 to 22474. [2018-09-10 11:41:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22474 states. [2018-09-10 11:41:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22474 states to 22474 states and 28864 transitions. [2018-09-10 11:41:06,887 INFO L78 Accepts]: Start accepts. Automaton has 22474 states and 28864 transitions. Word has length 428 [2018-09-10 11:41:06,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:06,888 INFO L480 AbstractCegarLoop]: Abstraction has 22474 states and 28864 transitions. [2018-09-10 11:41:06,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:41:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 22474 states and 28864 transitions. [2018-09-10 11:41:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-09-10 11:41:06,945 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:06,945 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:41:06,946 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1133682667, now seen corresponding path program 1 times [2018-09-10 11:41:06,946 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:06,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:06,947 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 507 proven. 263 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:41:08,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:08,154 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:08,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:08,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:08,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-09-10 11:41:08,965 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 107 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-09-10 11:41:09,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:09,555 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:09,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:09,577 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:10,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-09-10 11:41:10,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 375 proven. 107 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-09-10 11:41:11,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:11,410 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 5, 5] total 24 [2018-09-10 11:41:11,410 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:11,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-10 11:41:11,411 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-10 11:41:11,412 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2018-09-10 11:41:11,412 INFO L87 Difference]: Start difference. First operand 22474 states and 28864 transitions. Second operand 19 states. [2018-09-10 11:41:23,713 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-09-10 11:41:34,546 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-10 11:41:37,525 WARN L175 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-09-10 11:41:40,367 WARN L175 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:41:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:42,686 INFO L93 Difference]: Finished difference Result 54214 states and 76092 transitions. [2018-09-10 11:41:42,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-10 11:41:42,686 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 588 [2018-09-10 11:41:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:42,794 INFO L225 Difference]: With dead ends: 54214 [2018-09-10 11:41:42,795 INFO L226 Difference]: Without dead ends: 32126 [2018-09-10 11:41:42,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2582 GetRequests, 2433 SyntacticMatches, 3 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8496 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3486, Invalid=18270, Unknown=0, NotChecked=0, Total=21756 [2018-09-10 11:41:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32126 states. [2018-09-10 11:41:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32126 to 29812. [2018-09-10 11:41:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29812 states. [2018-09-10 11:41:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29812 states to 29812 states and 36651 transitions. [2018-09-10 11:41:43,580 INFO L78 Accepts]: Start accepts. Automaton has 29812 states and 36651 transitions. Word has length 588 [2018-09-10 11:41:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 29812 states and 36651 transitions. [2018-09-10 11:41:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-10 11:41:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29812 states and 36651 transitions. [2018-09-10 11:41:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-09-10 11:41:43,649 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:43,650 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-09-10 11:41:43,650 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1429869890, now seen corresponding path program 1 times [2018-09-10 11:41:43,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:43,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:43,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:43,652 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 444 proven. 207 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2018-09-10 11:41:44,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:44,387 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:44,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:44,395 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:44,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 881 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-09-10 11:41:45,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 474 proven. 89 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2018-09-10 11:41:45,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:45,458 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:45,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:45,478 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:46,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 988 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-10 11:41:46,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 444 proven. 207 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2018-09-10 11:41:46,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:46,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-09-10 11:41:46,562 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:46,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 11:41:46,563 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 11:41:46,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:41:46,563 INFO L87 Difference]: Start difference. First operand 29812 states and 36651 transitions. Second operand 8 states. [2018-09-10 11:41:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:55,818 INFO L93 Difference]: Finished difference Result 63997 states and 78888 transitions. [2018-09-10 11:41:55,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-10 11:41:55,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 649 [2018-09-10 11:41:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:55,904 INFO L225 Difference]: With dead ends: 63997 [2018-09-10 11:41:55,904 INFO L226 Difference]: Without dead ends: 34380 [2018-09-10 11:41:55,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2642 GetRequests, 2605 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=312, Invalid=948, Unknown=0, NotChecked=0, Total=1260 [2018-09-10 11:41:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34380 states. [2018-09-10 11:41:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34380 to 31298. [2018-09-10 11:41:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31298 states. [2018-09-10 11:41:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31298 states to 31298 states and 37549 transitions. [2018-09-10 11:41:56,505 INFO L78 Accepts]: Start accepts. Automaton has 31298 states and 37549 transitions. Word has length 649 [2018-09-10 11:41:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:56,505 INFO L480 AbstractCegarLoop]: Abstraction has 31298 states and 37549 transitions. [2018-09-10 11:41:56,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 11:41:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31298 states and 37549 transitions. [2018-09-10 11:41:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2018-09-10 11:41:56,556 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:56,556 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:41:56,556 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash 49717103, now seen corresponding path program 1 times [2018-09-10 11:41:56,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:56,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:56,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:56,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:56,558 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 492 proven. 95 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:41:57,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:57,018 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:41:57,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:57,027 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:57,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 925 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-10 11:41:57,656 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 492 proven. 95 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:41:58,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:58,352 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:58,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:58,369 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:58,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 925 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-10 11:41:59,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 492 proven. 95 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:41:59,577 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:59,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-10 11:41:59,578 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:59,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:41:59,580 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:41:59,581 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:41:59,581 INFO L87 Difference]: Start difference. First operand 31298 states and 37549 transitions. Second operand 6 states. [2018-09-10 11:42:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:02,862 INFO L93 Difference]: Finished difference Result 70599 states and 85717 transitions. [2018-09-10 11:42:02,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:42:02,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 677 [2018-09-10 11:42:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:02,926 INFO L225 Difference]: With dead ends: 70599 [2018-09-10 11:42:02,926 INFO L226 Difference]: Without dead ends: 39687 [2018-09-10 11:42:02,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2721 GetRequests, 2707 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:42:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39687 states. [2018-09-10 11:42:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39687 to 37829. [2018-09-10 11:42:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37829 states. [2018-09-10 11:42:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37829 states to 37829 states and 45418 transitions. [2018-09-10 11:42:03,472 INFO L78 Accepts]: Start accepts. Automaton has 37829 states and 45418 transitions. Word has length 677 [2018-09-10 11:42:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:03,472 INFO L480 AbstractCegarLoop]: Abstraction has 37829 states and 45418 transitions. [2018-09-10 11:42:03,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:42:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37829 states and 45418 transitions. [2018-09-10 11:42:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-09-10 11:42:03,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:03,520 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:42:03,520 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2003083642, now seen corresponding path program 1 times [2018-09-10 11:42:03,521 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:03,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:03,522 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:42:04,392 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:04,393 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:04,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:04,400 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:04,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-10 11:42:05,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:42:05,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:05,436 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:42:05,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:05,454 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:06,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2018-09-10 11:42:06,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 594 proven. 144 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-09-10 11:42:06,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:06,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-10 11:42:06,940 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:06,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:42:06,942 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:42:06,943 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:42:06,943 INFO L87 Difference]: Start difference. First operand 37829 states and 45418 transitions. Second operand 6 states. [2018-09-10 11:42:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:10,569 INFO L93 Difference]: Finished difference Result 78426 states and 95301 transitions. [2018-09-10 11:42:10,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:42:10,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 744 [2018-09-10 11:42:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:10,643 INFO L225 Difference]: With dead ends: 78426 [2018-09-10 11:42:10,643 INFO L226 Difference]: Without dead ends: 40983 [2018-09-10 11:42:10,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2989 GetRequests, 2973 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:42:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40983 states. [2018-09-10 11:42:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40983 to 40674. [2018-09-10 11:42:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40674 states. [2018-09-10 11:42:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40674 states to 40674 states and 47859 transitions. [2018-09-10 11:42:11,295 INFO L78 Accepts]: Start accepts. Automaton has 40674 states and 47859 transitions. Word has length 744 [2018-09-10 11:42:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:11,296 INFO L480 AbstractCegarLoop]: Abstraction has 40674 states and 47859 transitions. [2018-09-10 11:42:11,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:42:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 40674 states and 47859 transitions. [2018-09-10 11:42:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2018-09-10 11:42:11,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:11,349 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2018-09-10 11:42:11,349 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:11,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1101492262, now seen corresponding path program 1 times [2018-09-10 11:42:11,350 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:11,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:11,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:11,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:11,351 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 205 proven. 748 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2018-09-10 11:42:12,622 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:12,622 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:12,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:12,630 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:12,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-09-10 11:42:13,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 396 proven. 186 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-09-10 11:42:14,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:14,889 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:42:14,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:14,904 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:15,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 1076 proven. 2 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-09-10 11:42:15,791 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:15,986 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-09-10 11:42:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 396 proven. 186 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-09-10 11:42:16,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:16,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-10 11:42:16,725 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:16,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:42:16,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:42:16,726 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:42:16,727 INFO L87 Difference]: Start difference. First operand 40674 states and 47859 transitions. Second operand 11 states. [2018-09-10 11:42:27,503 WARN L175 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-10 11:42:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:28,509 INFO L93 Difference]: Finished difference Result 85983 states and 101316 transitions. [2018-09-10 11:42:28,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-10 11:42:28,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 757 [2018-09-10 11:42:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:28,585 INFO L225 Difference]: With dead ends: 85983 [2018-09-10 11:42:28,585 INFO L226 Difference]: Without dead ends: 45695 [2018-09-10 11:42:28,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3103 GetRequests, 3053 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2018-09-10 11:42:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45695 states. [2018-09-10 11:42:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45695 to 42780. [2018-09-10 11:42:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42780 states. [2018-09-10 11:42:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42780 states to 42780 states and 50083 transitions. [2018-09-10 11:42:29,312 INFO L78 Accepts]: Start accepts. Automaton has 42780 states and 50083 transitions. Word has length 757 [2018-09-10 11:42:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:29,313 INFO L480 AbstractCegarLoop]: Abstraction has 42780 states and 50083 transitions. [2018-09-10 11:42:29,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:42:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 42780 states and 50083 transitions. [2018-09-10 11:42:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-09-10 11:42:29,402 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:29,402 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:42:29,403 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash -385625113, now seen corresponding path program 1 times [2018-09-10 11:42:29,403 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:29,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:29,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:29,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:29,407 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 265 proven. 1202 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-09-10 11:42:31,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:31,323 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:31,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:31,331 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:31,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 1135 proven. 2 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-09-10 11:42:31,945 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 265 proven. 1206 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-09-10 11:42:32,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:32,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:42:32,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:32,683 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:33,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 1135 proven. 2 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-09-10 11:42:33,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 265 proven. 1206 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-09-10 11:42:34,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:34,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 16 [2018-09-10 11:42:34,425 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:34,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 11:42:34,427 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 11:42:34,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:42:34,427 INFO L87 Difference]: Start difference. First operand 42780 states and 50083 transitions. Second operand 10 states. [2018-09-10 11:42:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:40,548 INFO L93 Difference]: Finished difference Result 103050 states and 123820 transitions. [2018-09-10 11:42:40,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 11:42:40,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 807 [2018-09-10 11:42:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:40,755 INFO L225 Difference]: With dead ends: 103050 [2018-09-10 11:42:40,755 INFO L226 Difference]: Without dead ends: 64232 [2018-09-10 11:42:40,853 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3251 GetRequests, 3228 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:42:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64232 states. [2018-09-10 11:42:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64232 to 62858. [2018-09-10 11:42:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62858 states. [2018-09-10 11:42:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62858 states to 62858 states and 74404 transitions. [2018-09-10 11:42:42,029 INFO L78 Accepts]: Start accepts. Automaton has 62858 states and 74404 transitions. Word has length 807 [2018-09-10 11:42:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:42,030 INFO L480 AbstractCegarLoop]: Abstraction has 62858 states and 74404 transitions. [2018-09-10 11:42:42,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 11:42:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 62858 states and 74404 transitions. [2018-09-10 11:42:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-09-10 11:42:42,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:42,210 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:42:42,210 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:42,211 INFO L82 PathProgramCache]: Analyzing trace with hash 609720412, now seen corresponding path program 1 times [2018-09-10 11:42:42,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:42,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:42,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:42,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:42,212 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:43,530 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 11:42:43,966 WARN L175 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-09-10 11:42:44,241 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-10 11:42:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 495 proven. 815 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-10 11:42:45,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:45,063 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:45,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:45,070 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:45,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1405 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-09-10 11:42:45,646 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 541 proven. 186 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2018-09-10 11:42:46,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:46,321 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:42:46,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:46,337 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:47,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1405 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-09-10 11:42:47,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 541 proven. 186 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2018-09-10 11:42:48,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:48,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 23 [2018-09-10 11:42:48,767 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:48,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:42:48,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:42:48,769 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:42:48,769 INFO L87 Difference]: Start difference. First operand 62858 states and 74404 transitions. Second operand 16 states. [2018-09-10 11:43:04,457 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2018-09-10 11:43:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:05,600 INFO L93 Difference]: Finished difference Result 134813 states and 161822 transitions. [2018-09-10 11:43:05,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-10 11:43:05,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 824 [2018-09-10 11:43:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:05,828 INFO L225 Difference]: With dead ends: 134813 [2018-09-10 11:43:05,828 INFO L226 Difference]: Without dead ends: 70161 [2018-09-10 11:43:05,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3444 GetRequests, 3347 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3174 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2018-09-10 11:43:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70161 states. [2018-09-10 11:43:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70161 to 67837. [2018-09-10 11:43:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67837 states. [2018-09-10 11:43:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67837 states to 67837 states and 77547 transitions. [2018-09-10 11:43:07,607 INFO L78 Accepts]: Start accepts. Automaton has 67837 states and 77547 transitions. Word has length 824 [2018-09-10 11:43:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:07,607 INFO L480 AbstractCegarLoop]: Abstraction has 67837 states and 77547 transitions. [2018-09-10 11:43:07,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 11:43:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 67837 states and 77547 transitions. [2018-09-10 11:43:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-09-10 11:43:07,761 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:07,762 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-09-10 11:43:07,762 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:07,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1798867708, now seen corresponding path program 1 times [2018-09-10 11:43:07,763 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:07,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:07,764 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 943 proven. 668 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2018-09-10 11:43:08,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:08,765 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:08,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:08,773 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:09,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 2280 proven. 6 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-09-10 11:43:09,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 943 proven. 793 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-09-10 11:43:10,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:10,937 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:43:10,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:10,954 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:11,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 2280 proven. 6 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-09-10 11:43:12,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3068 backedges. 943 proven. 793 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-09-10 11:43:13,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:43:13,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-10 11:43:13,215 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:43:13,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:43:13,217 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:43:13,217 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:43:13,217 INFO L87 Difference]: Start difference. First operand 67837 states and 77547 transitions. Second operand 9 states. [2018-09-10 11:43:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:19,221 INFO L93 Difference]: Finished difference Result 132162 states and 151006 transitions. [2018-09-10 11:43:19,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 11:43:19,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 980 [2018-09-10 11:43:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:19,403 INFO L225 Difference]: With dead ends: 132162 [2018-09-10 11:43:19,403 INFO L226 Difference]: Without dead ends: 77267 [2018-09-10 11:43:19,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3940 GetRequests, 3918 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-09-10 11:43:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77267 states. [2018-09-10 11:43:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77267 to 72492. [2018-09-10 11:43:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72492 states. [2018-09-10 11:43:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72492 states to 72492 states and 82759 transitions. [2018-09-10 11:43:20,937 INFO L78 Accepts]: Start accepts. Automaton has 72492 states and 82759 transitions. Word has length 980 [2018-09-10 11:43:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:20,937 INFO L480 AbstractCegarLoop]: Abstraction has 72492 states and 82759 transitions. [2018-09-10 11:43:20,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:43:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 72492 states and 82759 transitions. [2018-09-10 11:43:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-09-10 11:43:21,050 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:21,050 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2018-09-10 11:43:21,050 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:21,051 INFO L82 PathProgramCache]: Analyzing trace with hash -281424110, now seen corresponding path program 1 times [2018-09-10 11:43:21,051 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:21,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:21,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:21,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:21,052 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 352 proven. 10 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2018-09-10 11:43:21,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:21,936 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:21,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:21,947 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:22,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 1642 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2018-09-10 11:43:23,079 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 352 proven. 10 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2018-09-10 11:43:23,454 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:23,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-10 11:43:23,455 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:23,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:43:23,456 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:43:23,456 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:23,456 INFO L87 Difference]: Start difference. First operand 72492 states and 82759 transitions. Second operand 3 states. Received shutdown request... [2018-09-10 11:43:24,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:24,467 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:43:24,472 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:43:24,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:43:24 BoogieIcfgContainer [2018-09-10 11:43:24,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:43:24,473 INFO L168 Benchmark]: Toolchain (without parser) took 225283.67 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -243.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-10 11:43:24,475 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:43:24,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1093.78 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. [2018-09-10 11:43:24,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.83 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. [2018-09-10 11:43:24,476 INFO L168 Benchmark]: Boogie Preprocessor took 409.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -945.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2018-09-10 11:43:24,477 INFO L168 Benchmark]: RCFGBuilder took 5319.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:43:24,478 INFO L168 Benchmark]: TraceAbstraction took 218292.90 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 408.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-10 11:43:24,482 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1093.78 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 160.83 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 409.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -945.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5319.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218292.90 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 408.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (72492states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (13715 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 218.2s OverallTime, 19 OverallIterations, 9 TraceHistogramMax, 147.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3734 SDtfs, 31782 SDslu, 6190 SDs, 0 SdLazy, 75038 SolverSat, 12514 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31647 GetRequests, 31073 SyntacticMatches, 47 SemanticMatches, 527 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15053 ImplicationChecksByTransitivity, 33.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72492occurred in iteration=18, 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: 10.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 24624 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 43.2s InterpolantComputationTime, 24711 NumberOfCodeBlocks, 24711 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 40086 ConstructedInterpolants, 4 QuantifiedInterpolants, 72003882 SizeOfPredicates, 38 NumberOfNonLiveVariables, 23250 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 69 InterpolantComputations, 10 PerfectInterpolantSequences, 70254/81049 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_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-43-24-494.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-43-24-494.csv Completed graceful shutdown