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_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:40:18,374 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:40:18,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:40:18,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:40:18,389 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:40:18,390 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:40:18,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:40:18,393 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:40:18,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:40:18,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:40:18,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:40:18,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:40:18,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:40:18,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:40:18,404 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:40:18,405 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:40:18,405 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:40:18,407 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:40:18,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:40:18,411 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:40:18,412 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:40:18,414 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:40:18,416 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:40:18,416 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:40:18,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:40:18,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:40:18,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:40:18,419 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:40:18,420 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:40:18,421 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:40:18,422 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:40:18,423 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:40:18,423 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:40:18,423 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:40:18,424 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:40:18,425 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:40:18,425 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 11:40:18,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:40:18,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:40:18,460 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:40:18,460 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:40:18,460 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:40:18,461 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:40:18,461 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:40:18,461 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:40:18,461 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:40:18,465 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:40:18,465 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:40:18,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:40:18,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:40:18,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:40:18,467 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:40:18,467 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:40:18,467 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:40:18,467 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:40:18,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:40:18,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:40:18,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:40:18,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:40:18,468 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:40:18,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:40:18,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:40:18,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:40:18,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:40:18,469 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:40:18,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:40:18,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:40:18,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:40:18,470 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:40:18,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:40:18,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:40:18,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:40:18,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:40:18,537 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:40:18,538 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:40:18,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-09-10 11:40:18,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b007b9248/315e291bf0254ac88e6046e9f759d717/FLAG5e1c8c060 [2018-09-10 11:40:19,224 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:40:19,225 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-09-10 11:40:19,247 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b007b9248/315e291bf0254ac88e6046e9f759d717/FLAG5e1c8c060 [2018-09-10 11:40:19,269 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b007b9248/315e291bf0254ac88e6046e9f759d717 [2018-09-10 11:40:19,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:40:19,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:40:19,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:40:19,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:40:19,295 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:40:19,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:40:19" (1/1) ... [2018-09-10 11:40:19,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efa186f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:19, skipping insertion in model container [2018-09-10 11:40:19,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:40:19" (1/1) ... [2018-09-10 11:40:19,523 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:40:19,921 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:40:19,946 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:40:20,131 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:40:20,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20 WrapperNode [2018-09-10 11:40:20,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:40:20,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:40:20,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:40:20,216 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:40:20,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:40:20,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:40:20,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:40:20,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:40:20,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (1/1) ... [2018-09-10 11:40:20,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:40:20,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:40:20,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:40:20,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:40:20,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (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 11:40:20,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:40:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:40:20,849 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 11:40:20,849 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 11:40:20,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:40:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:40:20,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:40:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:40:26,214 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:40:26,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:40:26 BoogieIcfgContainer [2018-09-10 11:40:26,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:40:26,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:40:26,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:40:26,220 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:40:26,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:40:19" (1/3) ... [2018-09-10 11:40:26,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475aa67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:40:26, skipping insertion in model container [2018-09-10 11:40:26,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:40:20" (2/3) ... [2018-09-10 11:40:26,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475aa67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:40:26, skipping insertion in model container [2018-09-10 11:40:26,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:40:26" (3/3) ... [2018-09-10 11:40:26,224 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-09-10 11:40:26,235 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:40:26,247 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:40:26,306 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:40:26,307 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:40:26,307 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:40:26,307 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:40:26,307 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:40:26,308 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:40:26,308 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:40:26,308 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:40:26,308 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:40:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:40:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-10 11:40:26,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:26,368 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:26,369 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 11:40:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-09-10 11:40:26,378 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:26,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:26,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:26,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:26,438 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:26,900 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 11:40:26,902 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:26,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:40:26,903 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:26,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:40:26,925 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:40:26,926 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:40:26,928 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-10 11:40:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:30,294 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-09-10 11:40:30,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:40:30,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-09-10 11:40:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:30,320 INFO L225 Difference]: With dead ends: 998 [2018-09-10 11:40:30,321 INFO L226 Difference]: Without dead ends: 699 [2018-09-10 11:40:30,331 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 11:40:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-09-10 11:40:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-09-10 11:40:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-09-10 11:40:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-09-10 11:40:30,459 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 48 [2018-09-10 11:40:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:30,461 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-09-10 11:40:30,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:40:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-09-10 11:40:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-10 11:40:30,471 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:30,472 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:30,475 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 11:40:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1703457744, now seen corresponding path program 1 times [2018-09-10 11:40:30,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:30,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:30,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:30,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:30,479 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:30,793 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:30,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:40:30,793 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:30,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:40:30,795 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:40:30,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:40:30,796 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 4 states. [2018-09-10 11:40:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:34,932 INFO L93 Difference]: Finished difference Result 2536 states and 4255 transitions. [2018-09-10 11:40:34,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:40:34,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-09-10 11:40:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:34,950 INFO L225 Difference]: With dead ends: 2536 [2018-09-10 11:40:34,951 INFO L226 Difference]: Without dead ends: 1849 [2018-09-10 11:40:34,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:40:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2018-09-10 11:40:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1834. [2018-09-10 11:40:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1834 states. [2018-09-10 11:40:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2813 transitions. [2018-09-10 11:40:35,048 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2813 transitions. Word has length 122 [2018-09-10 11:40:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:35,049 INFO L480 AbstractCegarLoop]: Abstraction has 1834 states and 2813 transitions. [2018-09-10 11:40:35,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:40:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2813 transitions. [2018-09-10 11:40:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-10 11:40:35,064 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:35,065 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:35,066 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 11:40:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash -828025503, now seen corresponding path program 1 times [2018-09-10 11:40:35,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:35,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:35,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:35,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:35,068 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:35,377 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:35,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:40:35,378 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:35,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:40:35,379 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:40:35,379 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:40:35,379 INFO L87 Difference]: Start difference. First operand 1834 states and 2813 transitions. Second operand 6 states. [2018-09-10 11:40:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:41,704 INFO L93 Difference]: Finished difference Result 7035 states and 11349 transitions. [2018-09-10 11:40:41,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:40:41,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-09-10 11:40:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:41,740 INFO L225 Difference]: With dead ends: 7035 [2018-09-10 11:40:41,741 INFO L226 Difference]: Without dead ends: 5207 [2018-09-10 11:40:41,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:40:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2018-09-10 11:40:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 4962. [2018-09-10 11:40:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2018-09-10 11:40:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 7001 transitions. [2018-09-10 11:40:41,948 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 7001 transitions. Word has length 151 [2018-09-10 11:40:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:41,948 INFO L480 AbstractCegarLoop]: Abstraction has 4962 states and 7001 transitions. [2018-09-10 11:40:41,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:40:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 7001 transitions. [2018-09-10 11:40:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-10 11:40:41,961 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:41,961 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:41,962 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 11:40:41,963 INFO L82 PathProgramCache]: Analyzing trace with hash -614052072, now seen corresponding path program 1 times [2018-09-10 11:40:41,963 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:41,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:41,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:41,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:41,964 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:40:42,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:40:42,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:40:42,328 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:40:42,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:40:42,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:40:42,329 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:40:42,329 INFO L87 Difference]: Start difference. First operand 4962 states and 7001 transitions. Second operand 4 states. [2018-09-10 11:40:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:45,703 INFO L93 Difference]: Finished difference Result 14335 states and 21681 transitions. [2018-09-10 11:40:45,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:40:45,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-09-10 11:40:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:45,767 INFO L225 Difference]: With dead ends: 14335 [2018-09-10 11:40:45,768 INFO L226 Difference]: Without dead ends: 9379 [2018-09-10 11:40:45,804 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 11:40:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9379 states. [2018-09-10 11:40:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9379 to 9339. [2018-09-10 11:40:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9339 states. [2018-09-10 11:40:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 13614 transitions. [2018-09-10 11:40:46,088 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 13614 transitions. Word has length 208 [2018-09-10 11:40:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:46,089 INFO L480 AbstractCegarLoop]: Abstraction has 9339 states and 13614 transitions. [2018-09-10 11:40:46,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:40:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 13614 transitions. [2018-09-10 11:40:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-10 11:40:46,115 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:46,116 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:46,116 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 11:40:46,116 INFO L82 PathProgramCache]: Analyzing trace with hash 225996865, now seen corresponding path program 1 times [2018-09-10 11:40:46,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:46,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:46,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:46,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:46,118 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:46,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:46,605 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 11:40:46,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:46,615 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:46,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:47,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:47,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:47,838 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:40:47,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:47,854 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:48,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:48,455 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 11:40:48,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:40:48,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 11:40:48,637 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:40:48,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:40:48,639 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:40:48,639 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:40:48,639 INFO L87 Difference]: Start difference. First operand 9339 states and 13614 transitions. Second operand 9 states. [2018-09-10 11:40:57,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:57,295 INFO L93 Difference]: Finished difference Result 29172 states and 47688 transitions. [2018-09-10 11:40:57,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 11:40:57,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2018-09-10 11:40:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:57,375 INFO L225 Difference]: With dead ends: 29172 [2018-09-10 11:40:57,375 INFO L226 Difference]: Without dead ends: 11701 [2018-09-10 11:40:57,578 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 928 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2018-09-10 11:40:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11701 states. [2018-09-10 11:40:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11701 to 11063. [2018-09-10 11:40:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11063 states. [2018-09-10 11:40:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11063 states to 11063 states and 13782 transitions. [2018-09-10 11:40:57,925 INFO L78 Accepts]: Start accepts. Automaton has 11063 states and 13782 transitions. Word has length 232 [2018-09-10 11:40:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:57,926 INFO L480 AbstractCegarLoop]: Abstraction has 11063 states and 13782 transitions. [2018-09-10 11:40:57,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:40:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11063 states and 13782 transitions. [2018-09-10 11:40:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-10 11:40:57,946 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:57,946 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:40:57,947 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 11:40:57,947 INFO L82 PathProgramCache]: Analyzing trace with hash 385643921, now seen corresponding path program 1 times [2018-09-10 11:40:57,947 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:57,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:57,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:57,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:57,948 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-10 11:40:58,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:58,775 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 11:40:58,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:58,787 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:58,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:02,048 WARN L175 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-10 11:41:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-10 11:41:02,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:02,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:02,816 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 11:41:02,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:02,856 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:03,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 83 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:04,947 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:05,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:05,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5, 8, 5] total 14 [2018-09-10 11:41:05,146 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:05,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:41:05,147 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:41:05,147 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=129, Unknown=2, NotChecked=0, Total=182 [2018-09-10 11:41:05,147 INFO L87 Difference]: Start difference. First operand 11063 states and 13782 transitions. Second operand 9 states. [2018-09-10 11:41:12,112 WARN L175 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-09-10 11:41:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:28,664 INFO L93 Difference]: Finished difference Result 32073 states and 41770 transitions. [2018-09-10 11:41:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 11:41:28,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2018-09-10 11:41:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:28,748 INFO L225 Difference]: With dead ends: 32073 [2018-09-10 11:41:28,748 INFO L226 Difference]: Without dead ends: 21016 [2018-09-10 11:41:28,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1144 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=178, Invalid=521, Unknown=3, NotChecked=0, Total=702 [2018-09-10 11:41:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21016 states. [2018-09-10 11:41:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21016 to 20635. [2018-09-10 11:41:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20635 states. [2018-09-10 11:41:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20635 states to 20635 states and 25264 transitions. [2018-09-10 11:41:29,247 INFO L78 Accepts]: Start accepts. Automaton has 20635 states and 25264 transitions. Word has length 289 [2018-09-10 11:41:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:29,248 INFO L480 AbstractCegarLoop]: Abstraction has 20635 states and 25264 transitions. [2018-09-10 11:41:29,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:41:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 20635 states and 25264 transitions. [2018-09-10 11:41:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-10 11:41:29,284 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:29,285 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, 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, 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] [2018-09-10 11:41:29,285 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 11:41:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -854559706, now seen corresponding path program 1 times [2018-09-10 11:41:29,285 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:29,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:29,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:29,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:29,287 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:29,795 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-10 11:41:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 215 proven. 88 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-10 11:41:30,346 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:30,346 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 11:41:30,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:30,355 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:30,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:30,870 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 11:41:31,677 WARN L175 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-09-10 11:41:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:41:31,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 215 proven. 88 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-10 11:41:32,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:32,858 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:41:32,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:32,875 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:33,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-10 11:41:33,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-10 11:41:34,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:34,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 8, 5, 5] total 28 [2018-09-10 11:41:34,094 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:34,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 11:41:34,095 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 11:41:34,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2018-09-10 11:41:34,096 INFO L87 Difference]: Start difference. First operand 20635 states and 25264 transitions. Second operand 18 states. [2018-09-10 11:41:37,072 WARN L175 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-09-10 11:41:39,088 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-09-10 11:41:39,994 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-09-10 11:41:44,887 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-09-10 11:41:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:45,807 INFO L93 Difference]: Finished difference Result 48593 states and 62195 transitions. [2018-09-10 11:41:45,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-10 11:41:45,808 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 363 [2018-09-10 11:41:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:45,905 INFO L225 Difference]: With dead ends: 48593 [2018-09-10 11:41:45,905 INFO L226 Difference]: Without dead ends: 28348 [2018-09-10 11:41:45,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1476 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1275, Invalid=4577, Unknown=0, NotChecked=0, Total=5852 [2018-09-10 11:41:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28348 states. [2018-09-10 11:41:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28348 to 27088. [2018-09-10 11:41:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27088 states. [2018-09-10 11:41:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27088 states to 27088 states and 32492 transitions. [2018-09-10 11:41:46,773 INFO L78 Accepts]: Start accepts. Automaton has 27088 states and 32492 transitions. Word has length 363 [2018-09-10 11:41:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:46,774 INFO L480 AbstractCegarLoop]: Abstraction has 27088 states and 32492 transitions. [2018-09-10 11:41:46,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 11:41:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 27088 states and 32492 transitions. [2018-09-10 11:41:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-10 11:41:46,816 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:46,817 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:46,817 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 11:41:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504492, now seen corresponding path program 1 times [2018-09-10 11:41:46,818 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:46,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:46,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:46,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:46,819 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-09-10 11:41:47,187 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:41:47,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:41:47,187 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:47,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:41:47,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:41:47,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:47,189 INFO L87 Difference]: Start difference. First operand 27088 states and 32492 transitions. Second operand 3 states. [2018-09-10 11:41:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:48,622 INFO L93 Difference]: Finished difference Result 56452 states and 68399 transitions. [2018-09-10 11:41:48,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:41:48,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 390 [2018-09-10 11:41:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:48,699 INFO L225 Difference]: With dead ends: 56452 [2018-09-10 11:41:48,699 INFO L226 Difference]: Without dead ends: 29756 [2018-09-10 11:41:48,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29756 states. [2018-09-10 11:41:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29756 to 29167. [2018-09-10 11:41:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29167 states. [2018-09-10 11:41:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29167 states to 29167 states and 34720 transitions. [2018-09-10 11:41:49,224 INFO L78 Accepts]: Start accepts. Automaton has 29167 states and 34720 transitions. Word has length 390 [2018-09-10 11:41:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:49,225 INFO L480 AbstractCegarLoop]: Abstraction has 29167 states and 34720 transitions. [2018-09-10 11:41:49,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:41:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 29167 states and 34720 transitions. [2018-09-10 11:41:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-09-10 11:41:49,294 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:49,294 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, 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, 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] [2018-09-10 11:41:49,295 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 11:41:49,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1050991242, now seen corresponding path program 1 times [2018-09-10 11:41:49,295 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:49,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:49,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:49,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:49,296 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:41:49,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:49,736 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 11:41:49,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:49,744 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:49,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-09-10 11:41:50,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 136 proven. 239 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:41:51,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:51,129 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 11:41:51,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:51,144 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:51,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:41:51,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:41:51,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:51,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 17 [2018-09-10 11:41:51,856 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:51,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:41:51,857 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:41:51,857 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:41:51,858 INFO L87 Difference]: Start difference. First operand 29167 states and 34720 transitions. Second operand 11 states. [2018-09-10 11:42:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:04,823 INFO L93 Difference]: Finished difference Result 75943 states and 105285 transitions. [2018-09-10 11:42:04,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-10 11:42:04,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 435 [2018-09-10 11:42:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:05,118 INFO L225 Difference]: With dead ends: 75943 [2018-09-10 11:42:05,118 INFO L226 Difference]: Without dead ends: 47168 [2018-09-10 11:42:05,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1838 GetRequests, 1765 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=993, Invalid=3837, Unknown=0, NotChecked=0, Total=4830 [2018-09-10 11:42:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47168 states. [2018-09-10 11:42:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47168 to 44478. [2018-09-10 11:42:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44478 states. [2018-09-10 11:42:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44478 states to 44478 states and 59169 transitions. [2018-09-10 11:42:07,060 INFO L78 Accepts]: Start accepts. Automaton has 44478 states and 59169 transitions. Word has length 435 [2018-09-10 11:42:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:07,061 INFO L480 AbstractCegarLoop]: Abstraction has 44478 states and 59169 transitions. [2018-09-10 11:42:07,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:42:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 44478 states and 59169 transitions. [2018-09-10 11:42:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2018-09-10 11:42:07,259 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:07,259 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:07,259 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 11:42:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash 761968895, now seen corresponding path program 1 times [2018-09-10 11:42:07,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:07,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:07,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 175 proven. 394 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-09-10 11:42:08,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:08,153 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 11:42:08,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:08,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:08,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:14,899 WARN L175 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 40 [2018-09-10 11:42:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 475 proven. 4 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-09-10 11:42:17,682 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:20,837 WARN L175 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2018-09-10 11:42:20,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:20,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:21,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:21,789 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:21,944 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:22,174 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:22,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:22,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:22,737 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:22,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:23,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:24,135 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:26,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:26,665 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:26,909 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 11:42:29,179 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:29,180 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:1106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:945) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:355) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-09-10 11:42:29,185 INFO L168 Benchmark]: Toolchain (without parser) took 129903.35 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -257.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,187 INFO L168 Benchmark]: CDTParser took 0.26 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 11:42:29,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 929.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 181.73 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,189 INFO L168 Benchmark]: Boogie Preprocessor took 382.08 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,191 INFO L168 Benchmark]: RCFGBuilder took 5435.15 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 203.0 MB). Peak memory consumption was 203.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,191 INFO L168 Benchmark]: TraceAbstraction took 122968.79 ms. Allocated memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 396.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:42:29,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 929.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 181.73 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 382.08 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -952.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5435.15 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 203.0 MB). Peak memory consumption was 203.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 122968.79 ms. Allocated memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 396.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-42-29-229.csv Received shutdown request...