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/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:01:43,140 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:01:43,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:01:43,156 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:01:43,156 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:01:43,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:01:43,159 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:01:43,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:01:43,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:01:43,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:01:43,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:01:43,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:01:43,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:01:43,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:01:43,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:01:43,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:01:43,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:01:43,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:01:43,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:01:43,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:01:43,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:01:43,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:01:43,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-10 12:01:43,189 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 12:01:43,217 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:01:43,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:01:43,220 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:01:43,220 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:01:43,221 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:01:43,221 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:01:43,221 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:01:43,221 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:01:43,221 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:01:43,222 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:01:43,222 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:01:43,223 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:01:43,224 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:01:43,224 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:01:43,224 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:01:43,224 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:01:43,224 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:01:43,225 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:01:43,225 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:01:43,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:01:43,225 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:01:43,225 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:01:43,226 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:01:43,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:01:43,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:01:43,226 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:01:43,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:01:43,227 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:01:43,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:01:43,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:01:43,227 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:01:43,227 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:01:43,228 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:01:43,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:01:43,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:01:43,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:01:43,293 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:01:43,294 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:01:43,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-09-10 12:01:43,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3b11100/da8ef2679f3942bcbd7b3436006d4b29/FLAGab3981d6f [2018-09-10 12:01:44,007 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:01:44,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-09-10 12:01:44,038 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3b11100/da8ef2679f3942bcbd7b3436006d4b29/FLAGab3981d6f [2018-09-10 12:01:44,055 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3b11100/da8ef2679f3942bcbd7b3436006d4b29 [2018-09-10 12:01:44,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:01:44,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:01:44,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:01:44,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:01:44,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:01:44,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:44,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e80f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44, skipping insertion in model container [2018-09-10 12:01:44,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:44,299 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:01:44,586 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:01:44,613 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:01:44,789 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:01:44,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44 WrapperNode [2018-09-10 12:01:44,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:01:44,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:01:44,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:01:44,848 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:01:44,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:44,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:44,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:01:44,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:01:44,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:01:44,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:01:45,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (1/1) ... [2018-09-10 12:01:45,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:01:45,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:01:45,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:01:45,279 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:01:45,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (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 12:01:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-10 12:01:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-10 12:01:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:01:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:01:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:01:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:01:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:01:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:01:49,202 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:01:49,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:01:49 BoogieIcfgContainer [2018-09-10 12:01:49,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:01:49,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:01:49,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:01:49,208 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:01:49,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:01:44" (1/3) ... [2018-09-10 12:01:49,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d12e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:01:49, skipping insertion in model container [2018-09-10 12:01:49,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:01:44" (2/3) ... [2018-09-10 12:01:49,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d12e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:01:49, skipping insertion in model container [2018-09-10 12:01:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:01:49" (3/3) ... [2018-09-10 12:01:49,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-09-10 12:01:49,222 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:01:49,231 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:01:49,287 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:01:49,288 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:01:49,288 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:01:49,288 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:01:49,288 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:01:49,289 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:01:49,289 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:01:49,289 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:01:49,289 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:01:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-10 12:01:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-10 12:01:49,331 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:49,332 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:49,333 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash 696412100, now seen corresponding path program 1 times [2018-09-10 12:01:49,344 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:49,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:49,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:49,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:49,398 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:49,786 WARN L175 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:01:49,844 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 12:01:49,846 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:49,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:01:49,847 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:49,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:01:49,870 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:01:49,871 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:01:49,873 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-10 12:01:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:51,706 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-10 12:01:51,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:01:51,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-09-10 12:01:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:51,729 INFO L225 Difference]: With dead ends: 691 [2018-09-10 12:01:51,730 INFO L226 Difference]: Without dead ends: 434 [2018-09-10 12:01:51,739 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:01:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-10 12:01:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-10 12:01:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-10 12:01:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-09-10 12:01:51,828 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 54 [2018-09-10 12:01:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:51,829 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-09-10 12:01:51,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:01:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-09-10 12:01:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-10 12:01:51,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:51,838 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:51,839 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:51,839 INFO L82 PathProgramCache]: Analyzing trace with hash 947265864, now seen corresponding path program 1 times [2018-09-10 12:01:51,839 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:51,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:51,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:51,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:51,843 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:52,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:52,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:01:52,221 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:52,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:01:52,223 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:01:52,224 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:01:52,224 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-09-10 12:01:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:56,133 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-09-10 12:01:56,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:01:56,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-10 12:01:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:56,147 INFO L225 Difference]: With dead ends: 1588 [2018-09-10 12:01:56,147 INFO L226 Difference]: Without dead ends: 1160 [2018-09-10 12:01:56,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:01:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-09-10 12:01:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-09-10 12:01:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-09-10 12:01:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-09-10 12:01:56,238 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 124 [2018-09-10 12:01:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:56,238 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-09-10 12:01:56,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:01:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-09-10 12:01:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-10 12:01:56,256 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:56,257 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:56,257 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -7879032, now seen corresponding path program 1 times [2018-09-10 12:01:56,259 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:56,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:56,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:56,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:56,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:56,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:56,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 12:01:56,876 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:56,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 12:01:56,877 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 12:01:56,878 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:01:56,878 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 7 states. [2018-09-10 12:01:57,077 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:02:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:03,117 INFO L93 Difference]: Finished difference Result 4187 states and 7206 transitions. [2018-09-10 12:02:03,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 12:02:03,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-09-10 12:02:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:03,145 INFO L225 Difference]: With dead ends: 4187 [2018-09-10 12:02:03,145 INFO L226 Difference]: Without dead ends: 3040 [2018-09-10 12:02:03,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:02:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2018-09-10 12:02:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2856. [2018-09-10 12:02:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2018-09-10 12:02:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4081 transitions. [2018-09-10 12:02:03,274 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4081 transitions. Word has length 220 [2018-09-10 12:02:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:03,275 INFO L480 AbstractCegarLoop]: Abstraction has 2856 states and 4081 transitions. [2018-09-10 12:02:03,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 12:02:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4081 transitions. [2018-09-10 12:02:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-09-10 12:02:03,288 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:03,288 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:03,288 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1091742600, now seen corresponding path program 1 times [2018-09-10 12:02:03,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:03,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:03,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:03,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:03,290 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:03,644 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:02:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 147 proven. 191 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 12:02:04,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:04,321 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 12:02:04,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:04,345 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:04,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 12:02:04,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:05,217 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:02:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 224 proven. 79 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-10 12:02:05,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:05,908 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 12:02:05,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:05,925 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:06,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-10 12:02:06,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 149 proven. 180 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:02:07,590 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 12:02:07,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-10 12:02:07,591 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:07,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:02:07,593 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:02:07,593 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:02:07,593 INFO L87 Difference]: Start difference. First operand 2856 states and 4081 transitions. Second operand 5 states. [2018-09-10 12:02:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:10,133 INFO L93 Difference]: Finished difference Result 6294 states and 9246 transitions. [2018-09-10 12:02:10,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:02:10,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2018-09-10 12:02:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:10,153 INFO L225 Difference]: With dead ends: 6294 [2018-09-10 12:02:10,153 INFO L226 Difference]: Without dead ends: 3444 [2018-09-10 12:02:10,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1572 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:02:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2018-09-10 12:02:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3417. [2018-09-10 12:02:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2018-09-10 12:02:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 4819 transitions. [2018-09-10 12:02:10,257 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 4819 transitions. Word has length 396 [2018-09-10 12:02:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:10,258 INFO L480 AbstractCegarLoop]: Abstraction has 3417 states and 4819 transitions. [2018-09-10 12:02:10,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:02:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 4819 transitions. [2018-09-10 12:02:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-10 12:02:10,277 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:10,278 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:10,278 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -957582268, now seen corresponding path program 1 times [2018-09-10 12:02:10,279 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:10,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:10,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:10,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:10,280 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 355 proven. 217 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-10 12:02:11,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:11,603 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 12:02:11,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:11,611 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:11,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 559 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-10 12:02:11,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 353 proven. 79 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-09-10 12:02:12,267 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:12,267 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 12:02:12,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:12,283 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:12,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 559 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-10 12:02:12,904 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 353 proven. 79 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-09-10 12:02:13,215 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:02:13,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 26 [2018-09-10 12:02:13,216 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:02:13,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:02:13,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:02:13,219 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-09-10 12:02:13,220 INFO L87 Difference]: Start difference. First operand 3417 states and 4819 transitions. Second operand 17 states. [2018-09-10 12:02:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:24,247 INFO L93 Difference]: Finished difference Result 8057 states and 12135 transitions. [2018-09-10 12:02:24,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-10 12:02:24,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 470 [2018-09-10 12:02:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:24,262 INFO L225 Difference]: With dead ends: 8057 [2018-09-10 12:02:24,262 INFO L226 Difference]: Without dead ends: 2680 [2018-09-10 12:02:24,310 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1966 GetRequests, 1892 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1186, Invalid=4514, Unknown=0, NotChecked=0, Total=5700 [2018-09-10 12:02:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2018-09-10 12:02:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1953. [2018-09-10 12:02:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2018-09-10 12:02:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2260 transitions. [2018-09-10 12:02:24,374 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2260 transitions. Word has length 470 [2018-09-10 12:02:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:24,375 INFO L480 AbstractCegarLoop]: Abstraction has 1953 states and 2260 transitions. [2018-09-10 12:02:24,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:02:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2260 transitions. [2018-09-10 12:02:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-09-10 12:02:24,393 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:24,393 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:24,397 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash 558294800, now seen corresponding path program 1 times [2018-09-10 12:02:24,398 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:24,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:24,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:24,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:24,400 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 306 proven. 228 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-09-10 12:02:25,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:25,924 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 12:02:25,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:25,933 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:26,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:27,118 WARN L175 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-10 12:02:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2018-09-10 12:02:27,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 306 proven. 228 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-09-10 12:02:28,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:28,633 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 12:02:28,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:28,648 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:29,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-09-10 12:02:29,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 188 proven. 285 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-10 12:02:30,074 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 12:02:30,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6, 6, 5] total 21 [2018-09-10 12:02:30,074 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:30,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:02:30,075 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:02:30,075 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:02:30,076 INFO L87 Difference]: Start difference. First operand 1953 states and 2260 transitions. Second operand 5 states. [2018-09-10 12:02:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:33,007 INFO L93 Difference]: Finished difference Result 5431 states and 6386 transitions. [2018-09-10 12:02:33,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:02:33,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 576 [2018-09-10 12:02:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:33,030 INFO L225 Difference]: With dead ends: 5431 [2018-09-10 12:02:33,030 INFO L226 Difference]: Without dead ends: 3484 [2018-09-10 12:02:33,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2316 GetRequests, 2294 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:02:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2018-09-10 12:02:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3241. [2018-09-10 12:02:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-09-10 12:02:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 3712 transitions. [2018-09-10 12:02:33,115 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 3712 transitions. Word has length 576 [2018-09-10 12:02:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:33,116 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 3712 transitions. [2018-09-10 12:02:33,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:02:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 3712 transitions. [2018-09-10 12:02:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2018-09-10 12:02:33,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:33,145 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-10 12:02:33,146 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash 258321817, now seen corresponding path program 1 times [2018-09-10 12:02:33,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:33,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:33,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:33,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:33,147 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:34,199 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-09-10 12:02:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 359 proven. 622 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-10 12:02:35,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:35,169 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 12:02:35,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:35,180 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:35,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 1022 proven. 2 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-09-10 12:02:35,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 501 proven. 228 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2018-09-10 12:02:36,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:36,761 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 12:02:36,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:36,777 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:37,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 827 proven. 25 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-09-10 12:02:38,549 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:38,993 WARN L175 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-10 12:02:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 253 proven. 728 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2018-09-10 12:02:41,107 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:02:41,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6, 10, 11] total 36 [2018-09-10 12:02:41,107 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:02:41,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:02:41,109 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:02:41,110 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2018-09-10 12:02:41,110 INFO L87 Difference]: Start difference. First operand 3241 states and 3712 transitions. Second operand 18 states. [2018-09-10 12:02:44,086 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-09-10 12:02:44,322 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-09-10 12:02:44,609 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-09-10 12:02:44,790 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-10 12:02:47,577 WARN L175 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-09-10 12:02:47,797 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2018-09-10 12:02:48,596 WARN L175 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2018-09-10 12:02:49,031 WARN L175 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2018-09-10 12:02:50,633 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2018-09-10 12:02:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:51,550 INFO L93 Difference]: Finished difference Result 9585 states and 11223 transitions. [2018-09-10 12:02:51,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-10 12:02:51,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 711 [2018-09-10 12:02:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:51,577 INFO L225 Difference]: With dead ends: 9585 [2018-09-10 12:02:51,578 INFO L226 Difference]: Without dead ends: 6533 [2018-09-10 12:02:51,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2925 GetRequests, 2849 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=997, Invalid=4855, Unknown=0, NotChecked=0, Total=5852 [2018-09-10 12:02:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2018-09-10 12:02:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 5880. [2018-09-10 12:02:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5880 states. [2018-09-10 12:02:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 6543 transitions. [2018-09-10 12:02:51,756 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 6543 transitions. Word has length 711 [2018-09-10 12:02:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:51,757 INFO L480 AbstractCegarLoop]: Abstraction has 5880 states and 6543 transitions. [2018-09-10 12:02:51,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:02:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 6543 transitions. [2018-09-10 12:02:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-09-10 12:02:51,789 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:51,790 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-09-10 12:02:51,791 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:51,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1109218899, now seen corresponding path program 1 times [2018-09-10 12:02:51,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:51,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:51,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:51,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:51,793 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-09-10 12:02:53,324 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:53,324 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 12:02:53,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:53,342 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:53,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 1340 proven. 2 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-09-10 12:02:54,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-09-10 12:02:54,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:54,507 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:02:54,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:54,528 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:55,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 1340 proven. 2 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-09-10 12:02:55,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 655 proven. 228 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-09-10 12:02:55,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:02:55,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-10 12:02:55,966 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:02:55,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 12:02:55,968 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 12:02:55,968 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:02:55,969 INFO L87 Difference]: Start difference. First operand 5880 states and 6543 transitions. Second operand 7 states. [2018-09-10 12:02:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:58,628 INFO L93 Difference]: Finished difference Result 16035 states and 20409 transitions. [2018-09-10 12:02:58,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 12:02:58,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 805 [2018-09-10 12:02:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:58,713 INFO L225 Difference]: With dead ends: 16035 [2018-09-10 12:02:58,713 INFO L226 Difference]: Without dead ends: 10287 [2018-09-10 12:02:58,745 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3236 GetRequests, 3221 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:02:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2018-09-10 12:02:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 9850. [2018-09-10 12:02:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9850 states. [2018-09-10 12:02:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 11271 transitions. [2018-09-10 12:02:59,091 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 11271 transitions. Word has length 805 [2018-09-10 12:02:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:59,092 INFO L480 AbstractCegarLoop]: Abstraction has 9850 states and 11271 transitions. [2018-09-10 12:02:59,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 12:02:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 11271 transitions. [2018-09-10 12:02:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2018-09-10 12:02:59,138 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:59,139 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-09-10 12:02:59,139 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash -361343459, now seen corresponding path program 1 times [2018-09-10 12:02:59,140 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:59,141 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 875 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-10 12:03:00,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:00,181 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:03:00,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:00,189 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:00,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1782 proven. 2 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2018-09-10 12:03:01,011 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 875 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-10 12:03:01,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:01,738 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:03:01,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:01,753 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:02,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1782 proven. 2 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2018-09-10 12:03:02,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 875 proven. 228 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-09-10 12:03:03,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:03:03,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-10 12:03:03,614 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:03:03,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 12:03:03,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 12:03:03,616 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:03:03,616 INFO L87 Difference]: Start difference. First operand 9850 states and 11271 transitions. Second operand 7 states. [2018-09-10 12:03:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:03:06,133 INFO L93 Difference]: Finished difference Result 20670 states and 23955 transitions. [2018-09-10 12:03:06,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 12:03:06,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 965 [2018-09-10 12:03:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:03:06,176 INFO L225 Difference]: With dead ends: 20670 [2018-09-10 12:03:06,177 INFO L226 Difference]: Without dead ends: 11009 [2018-09-10 12:03:06,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3875 GetRequests, 3860 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:03:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11009 states. [2018-09-10 12:03:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11009 to 10613. [2018-09-10 12:03:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10613 states. [2018-09-10 12:03:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10613 states to 10613 states and 12028 transitions. [2018-09-10 12:03:06,430 INFO L78 Accepts]: Start accepts. Automaton has 10613 states and 12028 transitions. Word has length 965 [2018-09-10 12:03:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:03:06,432 INFO L480 AbstractCegarLoop]: Abstraction has 10613 states and 12028 transitions. [2018-09-10 12:03:06,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 12:03:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10613 states and 12028 transitions. [2018-09-10 12:03:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2018-09-10 12:03:06,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:03:06,481 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:03:06,482 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:03:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash 377314145, now seen corresponding path program 1 times [2018-09-10 12:03:06,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:03:06,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:06,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:06,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:06,483 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:03:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:07,431 WARN L175 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:03:07,639 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:03:08,111 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-09-10 12:03:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 778 proven. 1404 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2018-09-10 12:03:10,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:10,218 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:03:10,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:10,227 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:10,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 2142 proven. 2 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2018-09-10 12:03:11,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 772 proven. 477 refuted. 0 times theorem prover too weak. 1955 trivial. 0 not checked. [2018-09-10 12:03:13,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:13,604 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:03:13,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:13,620 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:14,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:14,844 WARN L175 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2018-09-10 12:03:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 2118 proven. 6 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2018-09-10 12:03:16,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 1403 proven. 303 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2018-09-10 12:03:17,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:03:17,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6, 7, 8] total 31 [2018-09-10 12:03:17,119 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:03:17,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:03:17,121 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:03:17,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2018-09-10 12:03:17,121 INFO L87 Difference]: Start difference. First operand 10613 states and 12028 transitions. Second operand 18 states. [2018-09-10 12:03:19,148 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2018-09-10 12:03:20,932 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-09-10 12:03:21,108 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-09-10 12:03:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:03:23,973 INFO L93 Difference]: Finished difference Result 22251 states and 25466 transitions. [2018-09-10 12:03:23,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-10 12:03:23,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1053 [2018-09-10 12:03:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:03:24,012 INFO L225 Difference]: With dead ends: 22251 [2018-09-10 12:03:24,012 INFO L226 Difference]: Without dead ends: 11827 [2018-09-10 12:03:24,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4269 GetRequests, 4213 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=643, Invalid=2549, Unknown=0, NotChecked=0, Total=3192 [2018-09-10 12:03:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11827 states. [2018-09-10 12:03:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11827 to 11029. [2018-09-10 12:03:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11029 states. [2018-09-10 12:03:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11029 states to 11029 states and 12466 transitions. [2018-09-10 12:03:24,348 INFO L78 Accepts]: Start accepts. Automaton has 11029 states and 12466 transitions. Word has length 1053 [2018-09-10 12:03:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:03:24,349 INFO L480 AbstractCegarLoop]: Abstraction has 11029 states and 12466 transitions. [2018-09-10 12:03:24,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:03:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11029 states and 12466 transitions. [2018-09-10 12:03:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2018-09-10 12:03:24,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:03:24,385 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 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] [2018-09-10 12:03:24,385 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:03:24,386 INFO L82 PathProgramCache]: Analyzing trace with hash -30972708, now seen corresponding path program 1 times [2018-09-10 12:03:24,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:03:24,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:24,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:24,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:24,387 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:03:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:25,365 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:03:25,560 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:03:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 778 proven. 1425 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2018-09-10 12:03:28,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:28,122 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:03:28,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:28,130 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:28,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 2163 proven. 2 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2018-09-10 12:03:28,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 779 proven. 477 refuted. 0 times theorem prover too weak. 1969 trivial. 0 not checked. [2018-09-10 12:03:30,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:30,000 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:03:30,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:30,017 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:30,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 2132 proven. 6 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2018-09-10 12:03:31,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3225 backedges. 1410 proven. 303 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2018-09-10 12:03:32,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:03:32,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 7, 8] total 31 [2018-09-10 12:03:32,936 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:03:32,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:03:32,938 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:03:32,939 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2018-09-10 12:03:32,939 INFO L87 Difference]: Start difference. First operand 11029 states and 12466 transitions. Second operand 18 states. [2018-09-10 12:03:40,287 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2018-09-10 12:03:40,808 WARN L175 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-09-10 12:03:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:03:44,128 INFO L93 Difference]: Finished difference Result 22411 states and 25554 transitions. [2018-09-10 12:03:44,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-10 12:03:44,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1060 [2018-09-10 12:03:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:03:44,160 INFO L225 Difference]: With dead ends: 22411 [2018-09-10 12:03:44,160 INFO L226 Difference]: Without dead ends: 11571 [2018-09-10 12:03:44,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4330 GetRequests, 4255 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1019, Invalid=4833, Unknown=0, NotChecked=0, Total=5852 [2018-09-10 12:03:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11571 states. [2018-09-10 12:03:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11571 to 10982. [2018-09-10 12:03:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10982 states. [2018-09-10 12:03:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 12072 transitions. [2018-09-10 12:03:44,375 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 12072 transitions. Word has length 1060 [2018-09-10 12:03:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:03:44,376 INFO L480 AbstractCegarLoop]: Abstraction has 10982 states and 12072 transitions. [2018-09-10 12:03:44,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:03:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 12072 transitions. [2018-09-10 12:03:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2018-09-10 12:03:44,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:03:44,404 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:03:44,404 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:03:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1092657775, now seen corresponding path program 1 times [2018-09-10 12:03:44,405 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:03:44,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:44,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:44,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:44,406 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:03:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 1004 proven. 1582 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2018-09-10 12:03:47,530 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:47,530 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:03:47,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:47,541 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:47,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 2238 proven. 2 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2018-09-10 12:03:48,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:48,816 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-10 12:03:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 1109 proven. 228 refuted. 0 times theorem prover too weak. 2236 trivial. 0 not checked. [2018-09-10 12:03:49,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:49,740 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:03:49,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:49,757 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:50,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:52,796 WARN L175 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 50 DAG size of output: 19 [2018-09-10 12:03:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 2536 proven. 15 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2018-09-10 12:03:53,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:56,089 WARN L175 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 46 DAG size of output: 17 [2018-09-10 12:03:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 1739 proven. 699 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2018-09-10 12:03:59,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:03:59,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6, 9, 11] total 36 [2018-09-10 12:03:59,199 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:03:59,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:03:59,201 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:03:59,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2018-09-10 12:03:59,202 INFO L87 Difference]: Start difference. First operand 10982 states and 12072 transitions. Second operand 17 states. [2018-09-10 12:04:00,131 WARN L175 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2018-09-10 12:04:00,796 WARN L175 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-09-10 12:04:01,424 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-09-10 12:04:01,664 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-09-10 12:04:05,641 WARN L175 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-09-10 12:04:05,933 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-09-10 12:04:06,271 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-09-10 12:04:06,820 WARN L175 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2018-09-10 12:04:07,103 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-09-10 12:04:07,598 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-10 12:04:07,846 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-09-10 12:04:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:04:10,921 INFO L93 Difference]: Finished difference Result 22267 states and 25562 transitions. [2018-09-10 12:04:10,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-10 12:04:10,922 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1139 [2018-09-10 12:04:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:04:10,948 INFO L225 Difference]: With dead ends: 22267 [2018-09-10 12:04:10,948 INFO L226 Difference]: Without dead ends: 11148 [2018-09-10 12:04:10,973 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4663 GetRequests, 4578 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1045, Invalid=6437, Unknown=0, NotChecked=0, Total=7482 [2018-09-10 12:04:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11148 states. [2018-09-10 12:04:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11148 to 10652. [2018-09-10 12:04:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2018-09-10 12:04:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 11881 transitions. [2018-09-10 12:04:11,186 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 11881 transitions. Word has length 1139 [2018-09-10 12:04:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:04:11,188 INFO L480 AbstractCegarLoop]: Abstraction has 10652 states and 11881 transitions. [2018-09-10 12:04:11,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:04:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 11881 transitions. [2018-09-10 12:04:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2018-09-10 12:04:11,215 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:04:11,216 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 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] [2018-09-10 12:04:11,217 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:04:11,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1188662640, now seen corresponding path program 1 times [2018-09-10 12:04:11,217 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:04:11,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:11,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:11,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:11,220 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:04:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3921 backedges. 1627 proven. 230 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-09-10 12:04:12,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:12,753 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:04:12,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:12,761 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:13,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3921 backedges. 2426 proven. 6 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2018-09-10 12:04:13,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3921 backedges. 1627 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-10 12:04:14,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:14,943 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:04:14,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:14,959 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:15,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3921 backedges. 2426 proven. 6 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2018-09-10 12:04:16,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3921 backedges. 1627 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-09-10 12:04:17,778 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:04:17,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-10 12:04:17,779 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:04:17,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:04:17,782 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:04:17,783 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:04:17,783 INFO L87 Difference]: Start difference. First operand 10652 states and 11881 transitions. Second operand 9 states. [2018-09-10 12:04:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:04:21,603 INFO L93 Difference]: Finished difference Result 25367 states and 28762 transitions. [2018-09-10 12:04:21,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 12:04:21,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1142 [2018-09-10 12:04:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:04:21,635 INFO L225 Difference]: With dead ends: 25367 [2018-09-10 12:04:21,635 INFO L226 Difference]: Without dead ends: 14580 [2018-09-10 12:04:21,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4584 GetRequests, 4564 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:04:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14580 states. [2018-09-10 12:04:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14580 to 13829. [2018-09-10 12:04:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13829 states. [2018-09-10 12:04:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13829 states to 13829 states and 15663 transitions. [2018-09-10 12:04:21,929 INFO L78 Accepts]: Start accepts. Automaton has 13829 states and 15663 transitions. Word has length 1142 [2018-09-10 12:04:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:04:21,932 INFO L480 AbstractCegarLoop]: Abstraction has 13829 states and 15663 transitions. [2018-09-10 12:04:21,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:04:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13829 states and 15663 transitions. [2018-09-10 12:04:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2018-09-10 12:04:21,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:04:21,963 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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, 2, 2, 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] [2018-09-10 12:04:21,963 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:04:21,963 INFO L82 PathProgramCache]: Analyzing trace with hash 105935485, now seen corresponding path program 1 times [2018-09-10 12:04:21,964 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:04:21,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:21,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:21,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:21,965 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:04:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:23,209 WARN L175 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-09-10 12:04:23,486 WARN L175 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 12:04:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 1209 proven. 1351 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-09-10 12:04:25,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:25,649 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:04:25,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:25,658 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:26,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 2025 proven. 2 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2018-09-10 12:04:26,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 1193 proven. 112 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2018-09-10 12:04:27,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:27,695 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:04:27,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:27,711 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:28,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 2045 proven. 14 refuted. 0 times theorem prover too weak. 2057 trivial. 0 not checked. [2018-09-10 12:04:29,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:29,799 WARN L175 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 12:04:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 1193 proven. 112 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2018-09-10 12:04:32,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:04:32,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 5] total 25 [2018-09-10 12:04:32,209 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:04:32,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:04:32,211 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:04:32,211 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-09-10 12:04:32,212 INFO L87 Difference]: Start difference. First operand 13829 states and 15663 transitions. Second operand 17 states. [2018-09-10 12:04:35,153 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-09-10 12:04:37,528 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-09-10 12:04:39,030 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-09-10 12:04:40,658 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-09-10 12:04:41,435 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-09-10 12:04:42,111 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2018-09-10 12:04:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:04:42,729 INFO L93 Difference]: Finished difference Result 27684 states and 34840 transitions. [2018-09-10 12:04:42,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-10 12:04:42,730 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1175 [2018-09-10 12:04:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:04:42,782 INFO L225 Difference]: With dead ends: 27684 [2018-09-10 12:04:42,783 INFO L226 Difference]: Without dead ends: 14046 [2018-09-10 12:04:42,831 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4811 GetRequests, 4725 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1268, Invalid=4584, Unknown=0, NotChecked=0, Total=5852 [2018-09-10 12:04:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states. [2018-09-10 12:04:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14046 to 12572. [2018-09-10 12:04:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12572 states. [2018-09-10 12:04:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12572 states to 12572 states and 13631 transitions. [2018-09-10 12:04:43,127 INFO L78 Accepts]: Start accepts. Automaton has 12572 states and 13631 transitions. Word has length 1175 [2018-09-10 12:04:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:04:43,129 INFO L480 AbstractCegarLoop]: Abstraction has 12572 states and 13631 transitions. [2018-09-10 12:04:43,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:04:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12572 states and 13631 transitions. [2018-09-10 12:04:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1618 [2018-09-10 12:04:43,170 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:04:43,171 INFO L376 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 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, 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 12:04:43,172 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:04:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash -484805427, now seen corresponding path program 1 times [2018-09-10 12:04:43,173 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:04:43,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:43,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:43,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:43,174 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:04:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 1918 proven. 2 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-09-10 12:04:45,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:45,276 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:04:45,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:45,284 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:45,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 1918 proven. 2 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-09-10 12:04:46,789 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 1918 proven. 2 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-09-10 12:04:48,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:48,164 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:04:48,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:48,182 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:49,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:04:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 1918 proven. 2 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-09-10 12:04:50,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:04:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 1918 proven. 2 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2018-09-10 12:04:51,622 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:04:51,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 12 [2018-09-10 12:04:51,624 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:04:51,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:04:51,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:04:51,626 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:04:51,626 INFO L87 Difference]: Start difference. First operand 12572 states and 13631 transitions. Second operand 10 states. [2018-09-10 12:04:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:04:53,965 INFO L93 Difference]: Finished difference Result 31887 states and 35421 transitions. [2018-09-10 12:04:53,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 12:04:53,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1617 [2018-09-10 12:04:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:04:53,980 INFO L225 Difference]: With dead ends: 31887 [2018-09-10 12:04:53,981 INFO L226 Difference]: Without dead ends: 7350 [2018-09-10 12:04:54,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6492 GetRequests, 6465 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:04:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2018-09-10 12:04:54,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7000. [2018-09-10 12:04:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7000 states. [2018-09-10 12:04:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 7323 transitions. [2018-09-10 12:04:54,160 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 7323 transitions. Word has length 1617 [2018-09-10 12:04:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:04:54,161 INFO L480 AbstractCegarLoop]: Abstraction has 7000 states and 7323 transitions. [2018-09-10 12:04:54,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 12:04:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 7323 transitions. [2018-09-10 12:04:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2018-09-10 12:04:54,188 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:04:54,189 INFO L376 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 7, 7, 7, 7, 7, 6, 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, 3, 3, 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, 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 12:04:54,189 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:04:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1166544768, now seen corresponding path program 1 times [2018-09-10 12:04:54,190 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:04:54,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:54,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:54,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:04:54,191 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:04:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:55,911 WARN L175 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-10 12:04:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7759 backedges. 1688 proven. 1168 refuted. 0 times theorem prover too weak. 4903 trivial. 0 not checked. [2018-09-10 12:04:58,344 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:04:58,344 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:04:58,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:04:58,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:04:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:04:58,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:05:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7759 backedges. 2926 proven. 2 refuted. 0 times theorem prover too weak. 4831 trivial. 0 not checked. [2018-09-10 12:05:00,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:05:00,198 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-10 12:05:00,911 WARN L175 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 12:05:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7759 backedges. 1697 proven. 112 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2018-09-10 12:05:02,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:05:02,942 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 27 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 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:05:02,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:05:02,959 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:05:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:05:04,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:05:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7759 backedges. 2908 proven. 20 refuted. 0 times theorem prover too weak. 4831 trivial. 0 not checked. [2018-09-10 12:05:05,689 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:05:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7759 backedges. 691 proven. 2280 refuted. 0 times theorem prover too weak. 4788 trivial. 0 not checked. [2018-09-10 12:05:10,544 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:05:10,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 8] total 30 [2018-09-10 12:05:10,546 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:05:10,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:05:10,547 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:05:10,547 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2018-09-10 12:05:10,548 INFO L87 Difference]: Start difference. First operand 7000 states and 7323 transitions. Second operand 17 states. [2018-09-10 12:05:15,536 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-09-10 12:05:17,773 WARN L175 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-09-10 12:05:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:05:17,967 INFO L93 Difference]: Finished difference Result 14263 states and 14925 transitions. [2018-09-10 12:05:17,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-10 12:05:17,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1618 [2018-09-10 12:05:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:05:17,980 INFO L225 Difference]: With dead ends: 14263 [2018-09-10 12:05:17,980 INFO L226 Difference]: Without dead ends: 7088 [2018-09-10 12:05:17,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6537 GetRequests, 6475 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=626, Invalid=3156, Unknown=0, NotChecked=0, Total=3782 [2018-09-10 12:05:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2018-09-10 12:05:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 6245. [2018-09-10 12:05:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6245 states. [2018-09-10 12:05:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 6483 transitions. [2018-09-10 12:05:18,112 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 6483 transitions. Word has length 1618 [2018-09-10 12:05:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:05:18,114 INFO L480 AbstractCegarLoop]: Abstraction has 6245 states and 6483 transitions. [2018-09-10 12:05:18,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:05:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 6483 transitions. [2018-09-10 12:05:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1798 [2018-09-10 12:05:18,146 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:05:18,147 INFO L376 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-10 12:05:18,147 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:05:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1249041215, now seen corresponding path program 1 times [2018-09-10 12:05:18,148 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:05:18,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:05:18,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:05:18,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:05:18,149 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:05:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:05:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9365 backedges. 1889 proven. 2327 refuted. 0 times theorem prover too weak. 5149 trivial. 0 not checked. [2018-09-10 12:05:23,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:05:23,172 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:05:23,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:05:23,182 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:05:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:05:23,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:05:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9365 backedges. 3241 proven. 2 refuted. 0 times theorem prover too weak. 6122 trivial. 0 not checked. [2018-09-10 12:05:25,056 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:05:25,268 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-10 12:05:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9365 backedges. 1865 proven. 112 refuted. 0 times theorem prover too weak. 7388 trivial. 0 not checked. [2018-09-10 12:05:27,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:05:27,576 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 29 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 29 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:05:27,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:05:27,592 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:05:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:05:28,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:05:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9365 backedges. 3221 proven. 22 refuted. 0 times theorem prover too weak. 6122 trivial. 0 not checked. [2018-09-10 12:05:30,956 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:05:31,127 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 Received shutdown request... [2018-09-10 12:05:31,487 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 12:05:31,690 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:05:31,690 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:05:31,696 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:05:31,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:05:31 BoogieIcfgContainer [2018-09-10 12:05:31,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:05:31,697 INFO L168 Benchmark]: Toolchain (without parser) took 227629.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -998.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,698 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:05:31,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.86 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 143.08 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,699 INFO L168 Benchmark]: Boogie Preprocessor took 287.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -892.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,700 INFO L168 Benchmark]: RCFGBuilder took 3924.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 148.8 MB). Peak memory consumption was 148.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,701 INFO L168 Benchmark]: TraceAbstraction took 222491.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -318.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:05:31,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.86 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 143.08 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 287.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -892.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3924.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 148.8 MB). Peak memory consumption was 148.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222491.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -318.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was analyzing trace of length 1798 with TraceHistMax 14, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 222.4s OverallTime, 17 OverallIterations, 14 TraceHistogramMax, 98.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1398 SDtfs, 39244 SDslu, 3486 SDs, 0 SdLazy, 49451 SolverSat, 7323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51627 GetRequests, 50969 SyntacticMatches, 43 SemanticMatches, 615 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 49.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13829occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 7975 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 12.6s SatisfiabilityAnalysisTime, 77.1s InterpolantComputationTime, 38579 NumberOfCodeBlocks, 38579 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 63965 ConstructedInterpolants, 212 QuantifiedInterpolants, 232457724 SizeOfPredicates, 75 NumberOfNonLiveVariables, 35430 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 68 InterpolantComputations, 5 PerfectInterpolantSequences, 188642/206159 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label07_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-05-31-721.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label07_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-05-31-721.csv Completed graceful shutdown