java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:02:36,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:02:36,296 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:02:36,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:02:36,315 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:02:36,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:02:36,318 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:02:36,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:02:36,325 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:02:36,326 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:02:36,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:02:36,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:02:36,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:02:36,331 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:02:36,332 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:02:36,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:02:36,336 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:02:36,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:02:36,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:02:36,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:02:36,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:02:36,358 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:02:36,361 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:02:36,361 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:02:36,361 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:02:36,364 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:02:36,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:02:36,367 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:02:36,368 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:02:36,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:02:36,372 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:02:36,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:02:36,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:02:36,373 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:02:36,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:02:36,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:02:36,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:02:36,405 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:02:36,406 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:02:36,407 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:02:36,407 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:02:36,407 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:02:36,408 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:02:36,408 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:02:36,408 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:02:36,408 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:02:36,408 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:02:36,408 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:02:36,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:02:36,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:02:36,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:02:36,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:02:36,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:02:36,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:02:36,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:02:36,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:02:36,412 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:02:36,412 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:02:36,412 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:02:36,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:02:36,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:02:36,413 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:02:36,413 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:02:36,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:02:36,414 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:02:36,414 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:02:36,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:02:36,414 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:02:36,414 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:02:36,415 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:02:36,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:02:36,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:02:36,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:02:36,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:02:36,513 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:02:36,513 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-07-24 14:02:36,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4ed456b/b2235fc14a3f4d4ca886b2e5749464c0/FLAGc13e0ca51 [2018-07-24 14:02:37,198 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:02:37,202 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-07-24 14:02:37,228 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4ed456b/b2235fc14a3f4d4ca886b2e5749464c0/FLAGc13e0ca51 [2018-07-24 14:02:37,248 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4ed456b/b2235fc14a3f4d4ca886b2e5749464c0 [2018-07-24 14:02:37,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:02:37,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:02:37,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:02:37,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:02:37,270 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:02:37,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:02:37" (1/1) ... [2018-07-24 14:02:37,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0fc1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:37, skipping insertion in model container [2018-07-24 14:02:37,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:02:37" (1/1) ... [2018-07-24 14:02:37,555 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:02:38,059 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:02:38,077 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:02:38,254 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:02:38,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38 WrapperNode [2018-07-24 14:02:38,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:02:38,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:02:38,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:02:38,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:02:38,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:02:38,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:02:38,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:02:38,494 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:02:38,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (1/1) ... [2018-07-24 14:02:38,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:02:38,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:02:38,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:02:38,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:02:38,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (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 [2018-07-24 14:02:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:02:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:02:38,960 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 [2018-07-24 14:02:38,960 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 [2018-07-24 14:02:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:02:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:02:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:02:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:02:44,129 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:02:44,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:02:44 BoogieIcfgContainer [2018-07-24 14:02:44,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:02:44,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:02:44,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:02:44,134 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:02:44,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:02:37" (1/3) ... [2018-07-24 14:02:44,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503a5373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:02:44, skipping insertion in model container [2018-07-24 14:02:44,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:02:38" (2/3) ... [2018-07-24 14:02:44,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503a5373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:02:44, skipping insertion in model container [2018-07-24 14:02:44,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:02:44" (3/3) ... [2018-07-24 14:02:44,140 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label41_true-unreach-call.c [2018-07-24 14:02:44,150 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:02:44,158 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:02:44,219 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:02:44,219 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:02:44,220 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:02:44,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:02:44,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:02:44,220 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:02:44,220 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:02:44,220 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:02:44,221 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:02:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-24 14:02:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-24 14:02:44,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:02:44,255 INFO L353 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] [2018-07-24 14:02:44,256 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:02:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash -146636772, now seen corresponding path program 1 times [2018-07-24 14:02:44,263 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:02:44,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:44,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:44,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:44,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:02:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:44,729 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:02:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:44,853 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:02:44,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:02:44,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:02:44,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:02:44,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:02:44,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:02:44,885 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-07-24 14:02:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:02:47,155 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-07-24 14:02:47,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:02:47,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-07-24 14:02:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:02:47,181 INFO L225 Difference]: With dead ends: 782 [2018-07-24 14:02:47,182 INFO L226 Difference]: Without dead ends: 487 [2018-07-24 14:02:47,191 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:02:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-07-24 14:02:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-07-24 14:02:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-07-24 14:02:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-07-24 14:02:47,286 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 28 [2018-07-24 14:02:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:02:47,287 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-07-24 14:02:47,287 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:02:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-07-24 14:02:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-24 14:02:47,298 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:02:47,298 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 14:02:47,299 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:02:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash -425752825, now seen corresponding path program 1 times [2018-07-24 14:02:47,299 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:02:47,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:47,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:47,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:47,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:02:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:48,067 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:02:48,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 14:02:48,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:02:48,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:02:48,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:02:48,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:02:48,071 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-07-24 14:02:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:02:56,014 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-07-24 14:02:56,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:02:56,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2018-07-24 14:02:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:02:56,032 INFO L225 Difference]: With dead ends: 1760 [2018-07-24 14:02:56,032 INFO L226 Difference]: Without dead ends: 1284 [2018-07-24 14:02:56,041 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:02:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-07-24 14:02:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-07-24 14:02:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-07-24 14:02:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-07-24 14:02:56,124 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 103 [2018-07-24 14:02:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:02:56,125 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-07-24 14:02:56,125 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:02:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-07-24 14:02:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-24 14:02:56,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:02:56,131 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:02:56,131 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:02:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1279135784, now seen corresponding path program 1 times [2018-07-24 14:02:56,132 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:02:56,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:56,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:56,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:56,133 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:02:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:56,409 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:02:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:02:56,478 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:02:56,478 INFO L191 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 [2018-07-24 14:02:56,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:56,497 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:02:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:56,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:02:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-24 14:02:56,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:02:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:02:57,194 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:02:57,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:02:57,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:02:57,195 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:02:57,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:02:57,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:02:57,197 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 5 states. [2018-07-24 14:03:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:04,243 INFO L93 Difference]: Finished difference Result 3395 states and 5619 transitions. [2018-07-24 14:03:04,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:03:04,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-07-24 14:03:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:04,258 INFO L225 Difference]: With dead ends: 3395 [2018-07-24 14:03:04,258 INFO L226 Difference]: Without dead ends: 2364 [2018-07-24 14:03:04,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:03:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-07-24 14:03:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2323. [2018-07-24 14:03:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-07-24 14:03:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3627 transitions. [2018-07-24 14:03:04,330 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3627 transitions. Word has length 176 [2018-07-24 14:03:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:04,331 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 3627 transitions. [2018-07-24 14:03:04,331 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:03:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3627 transitions. [2018-07-24 14:03:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-24 14:03:04,337 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:04,338 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:03:04,338 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash 239746622, now seen corresponding path program 1 times [2018-07-24 14:03:04,338 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:04,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:04,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:04,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:04,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:03:04,675 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:04,675 INFO L191 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 [2018-07-24 14:03:04,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:04,692 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:04,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:06,591 WARN L169 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 1344 DAG size of output: 51 [2018-07-24 14:03:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 72 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:03:06,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:07,195 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-07-24 14:03:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:03:07,821 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:03:07,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 9] total 13 [2018-07-24 14:03:07,822 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:03:07,823 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:03:07,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:03:07,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:03:07,824 INFO L87 Difference]: Start difference. First operand 2323 states and 3627 transitions. Second operand 3 states. [2018-07-24 14:03:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:10,024 INFO L93 Difference]: Finished difference Result 5978 states and 9599 transitions. [2018-07-24 14:03:10,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:03:10,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-07-24 14:03:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:10,053 INFO L225 Difference]: With dead ends: 5978 [2018-07-24 14:03:10,053 INFO L226 Difference]: Without dead ends: 3661 [2018-07-24 14:03:10,068 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:03:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2018-07-24 14:03:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3600. [2018-07-24 14:03:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3600 states. [2018-07-24 14:03:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5635 transitions. [2018-07-24 14:03:10,161 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5635 transitions. Word has length 220 [2018-07-24 14:03:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:10,162 INFO L471 AbstractCegarLoop]: Abstraction has 3600 states and 5635 transitions. [2018-07-24 14:03:10,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:03:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5635 transitions. [2018-07-24 14:03:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-24 14:03:10,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:10,174 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-24 14:03:10,174 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash 821872642, now seen corresponding path program 1 times [2018-07-24 14:03:10,175 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:10,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:10,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:10,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:10,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 145 proven. 78 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:10,763 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:10,763 INFO L191 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 [2018-07-24 14:03:10,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:10,771 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:10,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 14:03:11,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 71 proven. 155 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:03:11,442 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:03:11,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:03:11,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:03:11,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:03:11,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:03:11,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:03:11,444 INFO L87 Difference]: Start difference. First operand 3600 states and 5635 transitions. Second operand 5 states. [2018-07-24 14:03:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:14,713 INFO L93 Difference]: Finished difference Result 9082 states and 14671 transitions. [2018-07-24 14:03:14,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:03:14,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2018-07-24 14:03:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:14,747 INFO L225 Difference]: With dead ends: 9082 [2018-07-24 14:03:14,747 INFO L226 Difference]: Without dead ends: 5488 [2018-07-24 14:03:14,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:03:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2018-07-24 14:03:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5414. [2018-07-24 14:03:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5414 states. [2018-07-24 14:03:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 7789 transitions. [2018-07-24 14:03:14,923 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 7789 transitions. Word has length 310 [2018-07-24 14:03:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:14,924 INFO L471 AbstractCegarLoop]: Abstraction has 5414 states and 7789 transitions. [2018-07-24 14:03:14,924 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:03:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 7789 transitions. [2018-07-24 14:03:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-24 14:03:14,941 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:14,942 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:03:14,942 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1587316366, now seen corresponding path program 1 times [2018-07-24 14:03:14,942 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:14,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:14,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:14,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-07-24 14:03:15,345 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:03:15,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:03:15,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:03:15,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:03:15,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:03:15,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:03:15,350 INFO L87 Difference]: Start difference. First operand 5414 states and 7789 transitions. Second operand 4 states. [2018-07-24 14:03:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:19,449 INFO L93 Difference]: Finished difference Result 14163 states and 22239 transitions. [2018-07-24 14:03:19,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:03:19,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2018-07-24 14:03:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:19,504 INFO L225 Difference]: With dead ends: 14163 [2018-07-24 14:03:19,504 INFO L226 Difference]: Without dead ends: 8755 [2018-07-24 14:03:19,554 INFO L573 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 [2018-07-24 14:03:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8755 states. [2018-07-24 14:03:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8755 to 8689. [2018-07-24 14:03:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2018-07-24 14:03:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 12924 transitions. [2018-07-24 14:03:19,805 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 12924 transitions. Word has length 318 [2018-07-24 14:03:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:19,806 INFO L471 AbstractCegarLoop]: Abstraction has 8689 states and 12924 transitions. [2018-07-24 14:03:19,806 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:03:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 12924 transitions. [2018-07-24 14:03:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-24 14:03:19,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:19,861 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:03:19,862 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash 399067847, now seen corresponding path program 1 times [2018-07-24 14:03:19,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:19,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:19,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:19,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:19,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:20,253 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:20,253 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:03:20,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:20,261 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:20,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:20,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:20,997 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:20,997 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:03:21,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:21,014 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:21,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:21,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:03:22,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:22,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:03:22,678 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:22,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:03:22,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:03:22,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:03:22,679 INFO L87 Difference]: Start difference. First operand 8689 states and 12924 transitions. Second operand 9 states. [2018-07-24 14:03:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:28,922 INFO L93 Difference]: Finished difference Result 21688 states and 40850 transitions. [2018-07-24 14:03:28,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 14:03:28,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 370 [2018-07-24 14:03:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:29,075 INFO L225 Difference]: With dead ends: 21688 [2018-07-24 14:03:29,075 INFO L226 Difference]: Without dead ends: 12815 [2018-07-24 14:03:29,177 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1478 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:03:29,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2018-07-24 14:03:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 12403. [2018-07-24 14:03:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12403 states. [2018-07-24 14:03:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12403 states to 12403 states and 20562 transitions. [2018-07-24 14:03:29,895 INFO L78 Accepts]: Start accepts. Automaton has 12403 states and 20562 transitions. Word has length 370 [2018-07-24 14:03:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:29,896 INFO L471 AbstractCegarLoop]: Abstraction has 12403 states and 20562 transitions. [2018-07-24 14:03:29,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:03:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12403 states and 20562 transitions. [2018-07-24 14:03:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-24 14:03:29,992 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:29,992 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-24 14:03:29,993 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 126526519, now seen corresponding path program 1 times [2018-07-24 14:03:29,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:29,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:29,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:03:30,704 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:30,704 INFO L191 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 [2018-07-24 14:03:30,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:30,712 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:30,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:03:31,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:03:31,261 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:31,261 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:03:31,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:31,277 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:31,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:03:31,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:03:32,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:32,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:03:32,148 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:32,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:03:32,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:03:32,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:03:32,149 INFO L87 Difference]: Start difference. First operand 12403 states and 20562 transitions. Second operand 9 states. [2018-07-24 14:03:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:36,590 INFO L93 Difference]: Finished difference Result 24896 states and 42042 transitions. [2018-07-24 14:03:36,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:03:36,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 378 [2018-07-24 14:03:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:36,675 INFO L225 Difference]: With dead ends: 24896 [2018-07-24 14:03:36,675 INFO L226 Difference]: Without dead ends: 12688 [2018-07-24 14:03:36,759 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1508 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:03:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-07-24 14:03:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12305. [2018-07-24 14:03:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12305 states. [2018-07-24 14:03:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12305 states to 12305 states and 17497 transitions. [2018-07-24 14:03:37,120 INFO L78 Accepts]: Start accepts. Automaton has 12305 states and 17497 transitions. Word has length 378 [2018-07-24 14:03:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:37,121 INFO L471 AbstractCegarLoop]: Abstraction has 12305 states and 17497 transitions. [2018-07-24 14:03:37,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:03:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12305 states and 17497 transitions. [2018-07-24 14:03:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-24 14:03:37,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:37,203 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:03:37,204 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:37,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1308628907, now seen corresponding path program 1 times [2018-07-24 14:03:37,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:37,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:37,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:37,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:37,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-07-24 14:03:37,862 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:37,862 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:03:37,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:37,871 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:38,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-07-24 14:03:38,181 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-07-24 14:03:38,690 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:38,690 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:03:38,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:38,708 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:39,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 248 proven. 277 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:03:39,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-07-24 14:03:39,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:39,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 8 [2018-07-24 14:03:39,734 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:39,734 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:03:39,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:03:39,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:03:39,735 INFO L87 Difference]: Start difference. First operand 12305 states and 17497 transitions. Second operand 6 states. [2018-07-24 14:03:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:41,764 INFO L93 Difference]: Finished difference Result 27555 states and 42065 transitions. [2018-07-24 14:03:41,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:03:41,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 444 [2018-07-24 14:03:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:41,834 INFO L225 Difference]: With dead ends: 27555 [2018-07-24 14:03:41,834 INFO L226 Difference]: Without dead ends: 14327 [2018-07-24 14:03:41,879 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1786 GetRequests, 1770 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:03:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14327 states. [2018-07-24 14:03:42,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14327 to 13730. [2018-07-24 14:03:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13730 states. [2018-07-24 14:03:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13730 states to 13730 states and 17063 transitions. [2018-07-24 14:03:42,223 INFO L78 Accepts]: Start accepts. Automaton has 13730 states and 17063 transitions. Word has length 444 [2018-07-24 14:03:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:42,224 INFO L471 AbstractCegarLoop]: Abstraction has 13730 states and 17063 transitions. [2018-07-24 14:03:42,224 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:03:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states and 17063 transitions. [2018-07-24 14:03:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-07-24 14:03:42,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:42,278 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:03:42,278 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash -32935313, now seen corresponding path program 1 times [2018-07-24 14:03:42,279 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:42,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:42,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 95 proven. 394 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-07-24 14:03:43,452 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:43,453 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:03:43,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:43,461 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:43,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:44,120 WARN L169 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 18 [2018-07-24 14:04:04,618 WARN L169 SmtUtils]: Spent 20.40 s on a formula simplification. DAG size of input: 145 DAG size of output: 88 [2018-07-24 14:04:08,072 WARN L169 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2018-07-24 14:04:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 457 proven. 40 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-07-24 14:04:08,402 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:04:25,133 WARN L169 SmtUtils]: Spent 16.33 s on a formula simplification. DAG size of input: 144 DAG size of output: 75 [2018-07-24 14:04:25,281 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-07-24 14:04:27,370 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse29 (* 9 c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0))) (let ((.cse17 (div .cse29 10))) (let ((.cse18 (+ .cse17 1))) (let ((.cse19 (* 5 (div .cse17 5))) (.cse28 (* 5 (div .cse18 5))) (.cse15 (= 0 (mod .cse29 10))) (.cse12 (= (mod .cse17 5) 0)) (.cse5 (= 0 (mod .cse18 5)))) (let ((.cse14 (not .cse5)) (.cse16 (<= 0 .cse29)) (.cse1 (not .cse12)) (.cse6 (<= 0 .cse18)) (.cse3 (not .cse15)) (.cse10 (< .cse29 0)) (.cse8 (< .cse17 0)) (.cse4 (< 0 (+ .cse28 549143))) (.cse0 (< 0 (+ .cse19 549138))) (.cse7 (< 0 (+ .cse28 549138))) (.cse2 (forall ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7 Int)) (or (< |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0)| v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7) (exists ((v_prenex_127 Int)) (let ((.cse21 (* 9 v_prenex_127))) (let ((.cse20 (+ (div .cse21 10) 1))) (and (= 0 (mod .cse20 5)) (not (= (mod .cse21 10) 0)) (< .cse21 0) (<= (+ (* 5 (div .cse20 5)) 549138) 0) (<= v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7 v_prenex_127))))) (exists ((v_prenex_128 Int)) (let ((.cse23 (* 9 v_prenex_128))) (let ((.cse22 (+ (div .cse23 10) 1))) (and (< .cse22 0) (<= (+ (* 5 (div .cse22 5)) 549143) 0) (not (= (mod .cse23 10) 0)) (not (= 0 (mod .cse22 5))) (< .cse23 0) (<= v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7 v_prenex_128))))) (exists ((v_prenex_129 Int)) (let ((.cse25 (* 9 v_prenex_129))) (let ((.cse24 (div .cse25 10))) (and (<= (+ (* 5 (div .cse24 5)) 549143) 0) (= (mod .cse25 10) 0) (<= v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7 v_prenex_129) (< .cse24 0) (not (= 0 (mod .cse24 5))))))) (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_659 Int)) (let ((.cse26 (* 9 v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_659))) (let ((.cse27 (div .cse26 10))) (and (= (mod .cse26 10) 0) (<= (+ (* 5 (div .cse27 5)) 549138) 0) (= 0 (mod .cse27 5)) (<= v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_BEFORE_CALL_7 v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_659)))))))) (.cse11 (< 0 (+ .cse19 549143))) (.cse9 (< .cse18 0)) (.cse13 (<= 0 .cse17))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse4 .cse5 .cse6) (or .cse7 .cse0 .cse8 .cse2 .cse9) (or .cse0 .cse10 .cse2 .cse11) (or .cse0 .cse1 .cse10 .cse2) (or .cse0 .cse8 .cse10 .cse2) (or .cse7 .cse0 .cse2 .cse11 .cse4) (or .cse7 .cse12 .cse2 .cse11 .cse13 .cse14) (or .cse7 .cse0 .cse1 .cse2 .cse4) (or .cse7 .cse0 .cse8 .cse2 .cse14) (or .cse0 .cse8 .cse2 .cse4 .cse5 .cse6) (or .cse7 .cse2 .cse15 .cse4 .cse16) (or .cse7 .cse0 .cse1 .cse2 .cse14) (or .cse0 .cse8 .cse2 .cse3) (or .cse7 .cse0 .cse2 .cse11 .cse14) (or .cse12 .cse2 .cse11 .cse3 .cse13) (or .cse12 .cse2 .cse11 .cse4 .cse13 .cse5 .cse6) (or .cse7 .cse2 .cse15 .cse14 .cse16) (or .cse7 .cse2 .cse15 .cse9 .cse16) (or .cse2 .cse15 .cse4 .cse5 .cse16 .cse6) (or .cse7 .cse12 .cse2 .cse11 .cse4 .cse13) (or .cse7 .cse0 .cse1 .cse2 .cse9) (or .cse0 .cse2 .cse11 .cse4 .cse5 .cse6) (or .cse0 .cse2 .cse11 .cse3) (or .cse12 .cse10 .cse2 .cse11 .cse13) (or .cse7 .cse0 .cse8 .cse2 .cse4) (or .cse7 .cse0 .cse2 .cse11 .cse9) (or .cse7 .cse12 .cse2 .cse11 .cse9 .cse13))))))) is different from true [2018-07-24 14:04:27,378 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 28