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/Problem16_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:16:11,203 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:16:11,205 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:16:11,217 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:16:11,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:16:11,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:16:11,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:16:11,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:16:11,222 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:16:11,223 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:16:11,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:16:11,224 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:16:11,225 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:16:11,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:16:11,228 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:16:11,228 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:16:11,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:16:11,231 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:16:11,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:16:11,234 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:16:11,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:16:11,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:16:11,239 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:16:11,239 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:16:11,239 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:16:11,240 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:16:11,241 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:16:11,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:16:11,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:16:11,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:16:11,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:16:11,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:16:11,245 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:16:11,249 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:16:11,250 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:16:11,253 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:16:11,253 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 12:16:11,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:16:11,285 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:16:11,286 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:16:11,286 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:16:11,287 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:16:11,287 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:16:11,287 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:16:11,287 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:16:11,291 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:16:11,291 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:16:11,291 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:16:11,292 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:16:11,292 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:16:11,293 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:16:11,294 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:16:11,294 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:16:11,294 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:16:11,294 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:16:11,294 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:16:11,295 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:16:11,295 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:16:11,295 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:16:11,295 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:16:11,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:16:11,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:16:11,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:16:11,297 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:16:11,298 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:16:11,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:16:11,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:16:11,298 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:16:11,299 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:16:11,299 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:16:11,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:16:11,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:16:11,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:16:11,388 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:16:11,389 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:16:11,389 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-09-10 12:16:11,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8683bf1c2/3fb4f3c9b0a14daba6dcc937e3dc5a85/FLAG03bbf4dc8 [2018-09-10 12:16:12,094 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:16:12,097 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-09-10 12:16:12,119 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8683bf1c2/3fb4f3c9b0a14daba6dcc937e3dc5a85/FLAG03bbf4dc8 [2018-09-10 12:16:12,135 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8683bf1c2/3fb4f3c9b0a14daba6dcc937e3dc5a85 [2018-09-10 12:16:12,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:16:12,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:16:12,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:16:12,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:16:12,158 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:16:12,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:16:12" (1/1) ... [2018-09-10 12:16:12,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674df799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:12, skipping insertion in model container [2018-09-10 12:16:12,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:16:12" (1/1) ... [2018-09-10 12:16:12,408 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:16:12,993 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:16:13,011 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:16:13,279 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:16:13,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13 WrapperNode [2018-09-10 12:16:13,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:16:13,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:16:13,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:16:13,387 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:16:13,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:16:13,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:16:13,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:16:13,579 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:16:13,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:13,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:14,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (1/1) ... [2018-09-10 12:16:14,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:16:14,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:16:14,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:16:14,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:16:14,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (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 12:16:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:16:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:16:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:16:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:16:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:16:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:16:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:16:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:16:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:16:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:16:21,365 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:16:21,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:16:21 BoogieIcfgContainer [2018-09-10 12:16:21,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:16:21,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:16:21,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:16:21,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:16:21,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:16:12" (1/3) ... [2018-09-10 12:16:21,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d10a601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:16:21, skipping insertion in model container [2018-09-10 12:16:21,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:16:13" (2/3) ... [2018-09-10 12:16:21,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d10a601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:16:21, skipping insertion in model container [2018-09-10 12:16:21,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:16:21" (3/3) ... [2018-09-10 12:16:21,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label07_true-unreach-call.c [2018-09-10 12:16:21,388 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:16:21,399 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:16:21,457 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:16:21,457 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:16:21,458 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:16:21,458 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:16:21,458 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:16:21,458 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:16:21,458 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:16:21,459 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:16:21,459 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:16:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-10 12:16:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-10 12:16:21,504 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:21,505 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:16:21,507 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:21,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1118989143, now seen corresponding path program 1 times [2018-09-10 12:16:21,515 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:21,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:21,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:21,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:21,564 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:22,067 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 12:16:22,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:16:22,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:16:22,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:16:22,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:16:22,092 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:16:22,093 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:16:22,097 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-09-10 12:16:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:16:26,080 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-09-10 12:16:26,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:16:26,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-09-10 12:16:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:16:26,106 INFO L225 Difference]: With dead ends: 1156 [2018-09-10 12:16:26,106 INFO L226 Difference]: Without dead ends: 744 [2018-09-10 12:16:26,118 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 12:16:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-09-10 12:16:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-09-10 12:16:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-10 12:16:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-09-10 12:16:26,228 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 61 [2018-09-10 12:16:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:16:26,228 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-09-10 12:16:26,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:16:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-09-10 12:16:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-10 12:16:26,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:26,237 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:16:26,238 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1233366974, now seen corresponding path program 1 times [2018-09-10 12:16:26,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:26,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:26,240 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:26,572 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:16:26,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:16:26,572 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:16:26,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:16:26,575 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:16:26,575 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:16:26,575 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-09-10 12:16:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:16:32,595 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-09-10 12:16:32,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:16:32,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-09-10 12:16:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:16:32,607 INFO L225 Difference]: With dead ends: 2189 [2018-09-10 12:16:32,608 INFO L226 Difference]: Without dead ends: 1451 [2018-09-10 12:16:32,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:16:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-09-10 12:16:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-09-10 12:16:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-09-10 12:16:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-09-10 12:16:32,668 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 133 [2018-09-10 12:16:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:16:32,669 INFO L480 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-09-10 12:16:32,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:16:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-09-10 12:16:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-10 12:16:32,674 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:32,674 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:32,675 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2085405745, now seen corresponding path program 1 times [2018-09-10 12:16:32,675 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:32,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:32,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:32,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:32,677 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:33,026 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:16:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 12:16:33,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:16:33,283 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 12:16:33,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:33,302 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:16:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:33,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:16:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:33,598 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:16:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:33,963 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:16:33,963 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-10 12:16:33,964 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:16:33,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:16:33,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:16:33,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:16:33,965 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 3 states. [2018-09-10 12:16:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:16:37,451 INFO L93 Difference]: Finished difference Result 3559 states and 5861 transitions. [2018-09-10 12:16:37,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:16:37,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2018-09-10 12:16:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:16:37,473 INFO L225 Difference]: With dead ends: 3559 [2018-09-10 12:16:37,473 INFO L226 Difference]: Without dead ends: 2124 [2018-09-10 12:16:37,483 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:16:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2018-09-10 12:16:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2124. [2018-09-10 12:16:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2018-09-10 12:16:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3333 transitions. [2018-09-10 12:16:37,565 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3333 transitions. Word has length 162 [2018-09-10 12:16:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:16:37,566 INFO L480 AbstractCegarLoop]: Abstraction has 2124 states and 3333 transitions. [2018-09-10 12:16:37,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:16:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3333 transitions. [2018-09-10 12:16:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-10 12:16:37,572 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:37,573 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:37,573 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash -421794730, now seen corresponding path program 1 times [2018-09-10 12:16:37,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:37,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:37,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:37,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:37,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:37,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:16:37,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:16:37,945 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:16:37,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:16:37,947 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:16:37,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:16:37,947 INFO L87 Difference]: Start difference. First operand 2124 states and 3333 transitions. Second operand 6 states. [2018-09-10 12:16:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:16:42,222 INFO L93 Difference]: Finished difference Result 4959 states and 7691 transitions. [2018-09-10 12:16:42,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:16:42,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-09-10 12:16:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:16:42,240 INFO L225 Difference]: With dead ends: 4959 [2018-09-10 12:16:42,241 INFO L226 Difference]: Without dead ends: 2841 [2018-09-10 12:16:42,250 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 12:16:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2018-09-10 12:16:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2819. [2018-09-10 12:16:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2018-09-10 12:16:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3921 transitions. [2018-09-10 12:16:42,330 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3921 transitions. Word has length 177 [2018-09-10 12:16:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:16:42,331 INFO L480 AbstractCegarLoop]: Abstraction has 2819 states and 3921 transitions. [2018-09-10 12:16:42,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:16:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3921 transitions. [2018-09-10 12:16:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-09-10 12:16:42,338 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:42,339 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:16:42,339 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1996464703, now seen corresponding path program 1 times [2018-09-10 12:16:42,340 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:42,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:42,341 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:42,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:16:42,637 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:16:42,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:42,645 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:16:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:42,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:16:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:43,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:16:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:43,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:16:43,291 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:16:43,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:43,308 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:16:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:43,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:16:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:16:43,804 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:16:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 12:16:44,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:16:44,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:16:44,127 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:16:44,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:16:44,128 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:16:44,128 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:16:44,130 INFO L87 Difference]: Start difference. First operand 2819 states and 3921 transitions. Second operand 9 states. [2018-09-10 12:16:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:16:52,356 INFO L93 Difference]: Finished difference Result 7871 states and 11446 transitions. [2018-09-10 12:16:52,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:16:52,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2018-09-10 12:16:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:16:52,388 INFO L225 Difference]: With dead ends: 7871 [2018-09-10 12:16:52,388 INFO L226 Difference]: Without dead ends: 5058 [2018-09-10 12:16:52,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 1225 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:16:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2018-09-10 12:16:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5006. [2018-09-10 12:16:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5006 states. [2018-09-10 12:16:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 6355 transitions. [2018-09-10 12:16:52,556 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 6355 transitions. Word has length 307 [2018-09-10 12:16:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:16:52,557 INFO L480 AbstractCegarLoop]: Abstraction has 5006 states and 6355 transitions. [2018-09-10 12:16:52,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:16:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 6355 transitions. [2018-09-10 12:16:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-09-10 12:16:52,572 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:16:52,573 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:52,573 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:16:52,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1330986272, now seen corresponding path program 1 times [2018-09-10 12:16:52,574 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:16:52,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:52,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:52,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:16:52,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:16:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:16:53,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:16:53,110 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:16:53,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:53,124 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:16:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:53,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:16:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:16:53,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:16:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:16:54,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:16:54,128 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:16:54,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:16:54,145 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:16:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:16:54,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:16:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:16:54,714 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:16:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:16:55,197 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:16:55,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:16:55,197 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:16:55,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:16:55,199 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:16:55,199 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:16:55,199 INFO L87 Difference]: Start difference. First operand 5006 states and 6355 transitions. Second operand 9 states. [2018-09-10 12:17:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:03,644 INFO L93 Difference]: Finished difference Result 10988 states and 14184 transitions. [2018-09-10 12:17:03,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 12:17:03,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 497 [2018-09-10 12:17:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:03,671 INFO L225 Difference]: With dead ends: 10988 [2018-09-10 12:17:03,672 INFO L226 Difference]: Without dead ends: 5988 [2018-09-10 12:17:03,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2004 GetRequests, 1984 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-10 12:17:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2018-09-10 12:17:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5932. [2018-09-10 12:17:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2018-09-10 12:17:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7186 transitions. [2018-09-10 12:17:03,854 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7186 transitions. Word has length 497 [2018-09-10 12:17:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:03,856 INFO L480 AbstractCegarLoop]: Abstraction has 5932 states and 7186 transitions. [2018-09-10 12:17:03,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:17:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7186 transitions. [2018-09-10 12:17:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-10 12:17:03,873 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:03,874 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:03,874 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash -223707063, now seen corresponding path program 1 times [2018-09-10 12:17:03,875 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:03,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:03,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:03,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:03,876 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:04,382 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:17:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 160 proven. 191 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-10 12:17:04,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:04,725 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:17:04,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:04,733 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:04,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-09-10 12:17:05,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-09-10 12:17:05,395 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:17:05,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-10 12:17:05,396 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:17:05,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:17:05,397 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:17:05,397 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:17:05,397 INFO L87 Difference]: Start difference. First operand 5932 states and 7186 transitions. Second operand 3 states. [2018-09-10 12:17:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:08,000 INFO L93 Difference]: Finished difference Result 11858 states and 14366 transitions. [2018-09-10 12:17:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:17:08,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 498 [2018-09-10 12:17:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:08,026 INFO L225 Difference]: With dead ends: 11858 [2018-09-10 12:17:08,026 INFO L226 Difference]: Without dead ends: 5932 [2018-09-10 12:17:08,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 996 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:17:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2018-09-10 12:17:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5929. [2018-09-10 12:17:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5929 states. [2018-09-10 12:17:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5929 states to 5929 states and 6934 transitions. [2018-09-10 12:17:08,168 INFO L78 Accepts]: Start accepts. Automaton has 5929 states and 6934 transitions. Word has length 498 [2018-09-10 12:17:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:08,169 INFO L480 AbstractCegarLoop]: Abstraction has 5929 states and 6934 transitions. [2018-09-10 12:17:08,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:17:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5929 states and 6934 transitions. [2018-09-10 12:17:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-09-10 12:17:08,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:08,194 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:17:08,194 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:08,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1600601196, now seen corresponding path program 1 times [2018-09-10 12:17:08,195 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:08,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:08,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:08,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:08,196 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-09-10 12:17:08,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:08,897 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 12:17:08,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:08,905 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:09,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-09-10 12:17:09,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-09-10 12:17:10,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:10,386 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 12:17:10,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:10,403 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:10,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-09-10 12:17:11,069 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-09-10 12:17:11,518 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:17:11,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:17:11,519 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:17:11,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:17:11,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:17:11,520 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:17:11,520 INFO L87 Difference]: Start difference. First operand 5929 states and 6934 transitions. Second operand 9 states. [2018-09-10 12:17:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:19,793 INFO L93 Difference]: Finished difference Result 19981 states and 24441 transitions. [2018-09-10 12:17:19,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:17:19,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 615 [2018-09-10 12:17:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:19,860 INFO L225 Difference]: With dead ends: 19981 [2018-09-10 12:17:19,861 INFO L226 Difference]: Without dead ends: 10864 [2018-09-10 12:17:19,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2483 GetRequests, 2459 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:17:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2018-09-10 12:17:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10742. [2018-09-10 12:17:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10742 states. [2018-09-10 12:17:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 11757 transitions. [2018-09-10 12:17:20,205 INFO L78 Accepts]: Start accepts. Automaton has 10742 states and 11757 transitions. Word has length 615 [2018-09-10 12:17:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:20,207 INFO L480 AbstractCegarLoop]: Abstraction has 10742 states and 11757 transitions. [2018-09-10 12:17:20,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:17:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10742 states and 11757 transitions. [2018-09-10 12:17:20,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-09-10 12:17:20,233 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:20,236 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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:17:20,237 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:20,237 INFO L82 PathProgramCache]: Analyzing trace with hash -230157268, now seen corresponding path program 1 times [2018-09-10 12:17:20,237 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:20,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:20,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:20,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:20,238 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-09-10 12:17:21,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:21,707 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 12:17:21,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:21,726 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:21,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1104 proven. 2 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-09-10 12:17:22,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-09-10 12:17:23,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:23,063 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 12:17:23,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:23,081 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:23,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1104 proven. 2 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-09-10 12:17:24,006 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-09-10 12:17:24,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:17:24,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:17:24,548 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:17:24,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:17:24,549 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:17:24,549 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:17:24,550 INFO L87 Difference]: Start difference. First operand 10742 states and 11757 transitions. Second operand 9 states. [2018-09-10 12:17:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:30,706 INFO L93 Difference]: Finished difference Result 26851 states and 31378 transitions. [2018-09-10 12:17:30,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:17:30,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 869 [2018-09-10 12:17:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:30,803 INFO L225 Difference]: With dead ends: 26851 [2018-09-10 12:17:30,803 INFO L226 Difference]: Without dead ends: 16120 [2018-09-10 12:17:30,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3498 GetRequests, 3475 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:17:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16120 states. [2018-09-10 12:17:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16120 to 15762. [2018-09-10 12:17:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15762 states. [2018-09-10 12:17:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15762 states to 15762 states and 18509 transitions. [2018-09-10 12:17:31,404 INFO L78 Accepts]: Start accepts. Automaton has 15762 states and 18509 transitions. Word has length 869 [2018-09-10 12:17:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:31,406 INFO L480 AbstractCegarLoop]: Abstraction has 15762 states and 18509 transitions. [2018-09-10 12:17:31,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:17:31,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15762 states and 18509 transitions. [2018-09-10 12:17:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-09-10 12:17:31,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:31,461 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, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-10 12:17:31,461 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash 286446492, now seen corresponding path program 1 times [2018-09-10 12:17:31,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:31,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:31,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:31,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:31,463 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-10 12:17:33,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:33,002 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) [2018-09-10 12:17:33,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:33,012 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:17:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:33,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-10 12:17:33,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-10 12:17:34,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:34,456 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 12:17:34,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:34,473 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:35,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-10 12:17:35,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-09-10 12:17:36,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:17:36,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:17:36,073 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:17:36,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:17:36,075 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:17:36,075 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:17:36,075 INFO L87 Difference]: Start difference. First operand 15762 states and 18509 transitions. Second operand 9 states. [2018-09-10 12:17:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:42,348 INFO L93 Difference]: Finished difference Result 30663 states and 35787 transitions. [2018-09-10 12:17:42,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 12:17:42,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 888 [2018-09-10 12:17:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:42,403 INFO L225 Difference]: With dead ends: 30663 [2018-09-10 12:17:42,404 INFO L226 Difference]: Without dead ends: 13482 [2018-09-10 12:17:42,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3578 GetRequests, 3552 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-10 12:17:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13482 states. [2018-09-10 12:17:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13482 to 12358. [2018-09-10 12:17:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12358 states. [2018-09-10 12:17:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12358 states to 12358 states and 13299 transitions. [2018-09-10 12:17:42,814 INFO L78 Accepts]: Start accepts. Automaton has 12358 states and 13299 transitions. Word has length 888 [2018-09-10 12:17:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:42,816 INFO L480 AbstractCegarLoop]: Abstraction has 12358 states and 13299 transitions. [2018-09-10 12:17:42,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:17:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 12358 states and 13299 transitions. [2018-09-10 12:17:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1303 [2018-09-10 12:17:42,894 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:42,895 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, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:42,895 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:42,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2006210571, now seen corresponding path program 1 times [2018-09-10 12:17:42,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:42,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:42,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:42,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:42,897 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:44,175 WARN L175 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:17:44,532 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 12:17:45,028 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:17:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 781 proven. 283 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2018-09-10 12:17:46,270 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:46,270 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 12:17:46,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:46,278 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:46,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:17:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2018-09-10 12:17:47,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:17:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 378 proven. 905 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-09-10 12:17:50,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:17:50,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 16 [2018-09-10 12:17:50,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:17:50,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:17:50,607 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:17:50,607 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:17:50,607 INFO L87 Difference]: Start difference. First operand 12358 states and 13299 transitions. Second operand 6 states. [2018-09-10 12:17:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:17:54,121 INFO L93 Difference]: Finished difference Result 25813 states and 27780 transitions. [2018-09-10 12:17:54,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:17:54,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1302 [2018-09-10 12:17:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:17:54,167 INFO L225 Difference]: With dead ends: 25813 [2018-09-10 12:17:54,167 INFO L226 Difference]: Without dead ends: 13466 [2018-09-10 12:17:54,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2621 GetRequests, 2602 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:17:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13466 states. [2018-09-10 12:17:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13466 to 12986. [2018-09-10 12:17:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12986 states. [2018-09-10 12:17:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12986 states to 12986 states and 13950 transitions. [2018-09-10 12:17:54,440 INFO L78 Accepts]: Start accepts. Automaton has 12986 states and 13950 transitions. Word has length 1302 [2018-09-10 12:17:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:17:54,441 INFO L480 AbstractCegarLoop]: Abstraction has 12986 states and 13950 transitions. [2018-09-10 12:17:54,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:17:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12986 states and 13950 transitions. [2018-09-10 12:17:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2018-09-10 12:17:54,503 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:54,504 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, 9, 9, 9, 9, 9, 9, 9, 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, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:54,505 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:54,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1917687888, now seen corresponding path program 1 times [2018-09-10 12:17:54,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:54,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:54,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:54,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:54,507 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:17:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 480 proven. 2022 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-09-10 12:17:59,067 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:17:59,067 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:17:59,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:59,078 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:17:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:17:59,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 1963 proven. 2 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2018-09-10 12:18:01,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 465 proven. 1800 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2018-09-10 12:18:04,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:04,884 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:18:04,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:04,899 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:06,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 2200 proven. 2 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2018-09-10 12:18:07,549 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 700 proven. 919 refuted. 0 times theorem prover too weak. 2642 trivial. 0 not checked. [2018-09-10 12:18:11,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:18:11,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 5] total 24 [2018-09-10 12:18:11,490 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:18:11,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 12:18:11,492 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 12:18:11,492 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:18:11,492 INFO L87 Difference]: Start difference. First operand 12986 states and 13950 transitions. Second operand 16 states. [2018-09-10 12:18:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:27,986 INFO L93 Difference]: Finished difference Result 38562 states and 41800 transitions. [2018-09-10 12:18:27,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-10 12:18:27,986 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1542 [2018-09-10 12:18:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:28,057 INFO L225 Difference]: With dead ends: 38562 [2018-09-10 12:18:28,057 INFO L226 Difference]: Without dead ends: 25920 [2018-09-10 12:18:28,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6250 GetRequests, 6180 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=651, Invalid=2541, Unknown=0, NotChecked=0, Total=3192 [2018-09-10 12:18:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25920 states. [2018-09-10 12:18:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25920 to 23658. [2018-09-10 12:18:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23658 states. [2018-09-10 12:18:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23658 states to 23658 states and 25471 transitions. [2018-09-10 12:18:28,560 INFO L78 Accepts]: Start accepts. Automaton has 23658 states and 25471 transitions. Word has length 1542 [2018-09-10 12:18:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:28,561 INFO L480 AbstractCegarLoop]: Abstraction has 23658 states and 25471 transitions. [2018-09-10 12:18:28,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 12:18:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23658 states and 25471 transitions. [2018-09-10 12:18:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-09-10 12:18:28,649 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:28,650 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, 9, 9, 9, 9, 9, 9, 9, 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, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:28,650 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash 795244449, now seen corresponding path program 1 times [2018-09-10 12:18:28,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:28,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:28,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:28,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:28,654 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-09-10 12:18:30,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:30,699 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:18:30,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:30,708 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:31,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 2843 proven. 2 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2018-09-10 12:18:32,228 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-09-10 12:18:33,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:33,471 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:18:33,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:33,496 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:34,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 2843 proven. 2 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2018-09-10 12:18:35,545 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-09-10 12:18:36,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:18:36,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:18:36,794 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:18:36,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:18:36,796 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:18:36,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:18:36,796 INFO L87 Difference]: Start difference. First operand 23658 states and 25471 transitions. Second operand 9 states. [2018-09-10 12:18:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:42,922 INFO L93 Difference]: Finished difference Result 46899 states and 50406 transitions. [2018-09-10 12:18:42,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:18:42,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1551 [2018-09-10 12:18:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:42,982 INFO L225 Difference]: With dead ends: 46899 [2018-09-10 12:18:42,982 INFO L226 Difference]: Without dead ends: 23587 [2018-09-10 12:18:43,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6226 GetRequests, 6203 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:18:43,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23587 states. [2018-09-10 12:18:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23587 to 19894. [2018-09-10 12:18:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19894 states. [2018-09-10 12:18:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 20638 transitions. [2018-09-10 12:18:43,384 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 20638 transitions. Word has length 1551 [2018-09-10 12:18:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:43,385 INFO L480 AbstractCegarLoop]: Abstraction has 19894 states and 20638 transitions. [2018-09-10 12:18:43,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:18:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 20638 transitions. [2018-09-10 12:18:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-09-10 12:18:43,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:43,428 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, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:43,429 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:43,429 INFO L82 PathProgramCache]: Analyzing trace with hash -884725309, now seen corresponding path program 1 times [2018-09-10 12:18:43,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:43,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:43,430 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:44,425 WARN L175 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 12:18:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 1052 proven. 486 refuted. 0 times theorem prover too weak. 2148 trivial. 0 not checked. [2018-09-10 12:18:49,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:49,101 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:18:49,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:49,111 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:49,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 2166 proven. 6 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2018-09-10 12:18:51,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:51,585 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-09-10 12:18:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 345 proven. 2027 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2018-09-10 12:18:55,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:55,992 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:18:56,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:56,009 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:57,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 1925 proven. 6 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-09-10 12:18:59,305 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:00,259 WARN L175 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-09-10 12:19:00,381 WARN L175 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-10 12:19:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 347 proven. 2025 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2018-09-10 12:19:08,457 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:19:08,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 7, 8] total 33 [2018-09-10 12:19:08,458 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:19:08,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:19:08,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:19:08,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2018-09-10 12:19:08,461 INFO L87 Difference]: Start difference. First operand 19894 states and 20638 transitions. Second operand 18 states. [2018-09-10 12:19:09,891 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2018-09-10 12:19:14,395 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-09-10 12:19:19,367 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-10 12:19:21,768 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-09-10 12:19:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:22,032 INFO L93 Difference]: Finished difference Result 41138 states and 42696 transitions. [2018-09-10 12:19:22,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 12:19:22,033 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1551 [2018-09-10 12:19:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:22,081 INFO L225 Difference]: With dead ends: 41138 [2018-09-10 12:19:22,082 INFO L226 Difference]: Without dead ends: 21590 [2018-09-10 12:19:22,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6275 GetRequests, 6206 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=830, Invalid=3726, Unknown=0, NotChecked=0, Total=4556 [2018-09-10 12:19:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21590 states. [2018-09-10 12:19:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21590 to 19220. [2018-09-10 12:19:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19220 states. [2018-09-10 12:19:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 19929 transitions. [2018-09-10 12:19:22,405 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 19929 transitions. Word has length 1551 [2018-09-10 12:19:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:22,405 INFO L480 AbstractCegarLoop]: Abstraction has 19220 states and 19929 transitions. [2018-09-10 12:19:22,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:19:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 19929 transitions. [2018-09-10 12:19:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2018-09-10 12:19:22,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:22,451 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, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:22,451 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:19:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash 69235926, now seen corresponding path program 1 times [2018-09-10 12:19:22,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:22,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:22,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:22,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:22,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:24,057 WARN L175 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 12:19:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1172 proven. 283 refuted. 0 times theorem prover too weak. 4151 trivial. 0 not checked. [2018-09-10 12:19:26,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:26,138 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:19:26,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:26,148 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:26,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 3919 proven. 6 refuted. 0 times theorem prover too weak. 1681 trivial. 0 not checked. [2018-09-10 12:19:28,018 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:28,256 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-09-10 12:19:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1772 proven. 607 refuted. 0 times theorem prover too weak. 3227 trivial. 0 not checked. [2018-09-10 12:19:31,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:31,997 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 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:19:32,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:32,013 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:33,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 2867 proven. 872 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2018-09-10 12:19:34,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1623 proven. 215 refuted. 0 times theorem prover too weak. 3768 trivial. 0 not checked. [2018-09-10 12:19:38,765 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:19:38,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 7, 5] total 28 [2018-09-10 12:19:38,766 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:19:38,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 12:19:38,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 12:19:38,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2018-09-10 12:19:38,768 INFO L87 Difference]: Start difference. First operand 19220 states and 19929 transitions. Second operand 16 states. [2018-09-10 12:20:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:01,474 INFO L93 Difference]: Finished difference Result 42361 states and 43889 transitions. [2018-09-10 12:20:01,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-10 12:20:01,474 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1705 [2018-09-10 12:20:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:01,476 INFO L225 Difference]: With dead ends: 42361 [2018-09-10 12:20:01,476 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 12:20:01,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6881 GetRequests, 6828 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2018-09-10 12:20:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 12:20:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 12:20:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 12:20:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 12:20:01,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1705 [2018-09-10 12:20:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:01,524 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 12:20:01,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 12:20:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 12:20:01,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 12:20:01,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 12:20:01,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,585 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:01,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,776 WARN L175 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 626 DAG size of output: 504 [2018-09-10 12:20:02,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:02,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:03,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:03,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:03,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:20:03,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-10 12:20:03,408 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-10 12:20:03,409 INFO L168 Benchmark]: Toolchain (without parser) took 231261.98 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,410 INFO L168 Benchmark]: CDTParser took 0.19 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 12:20:03,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1235.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,414 INFO L168 Benchmark]: Boogie Preprocessor took 487.09 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -977.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,415 INFO L168 Benchmark]: RCFGBuilder took 7300.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 274.8 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,416 INFO L168 Benchmark]: TraceAbstraction took 222039.77 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -561.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:20:03,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1235.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 487.09 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -977.8 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7300.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 274.8 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222039.77 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -561.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 169]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 27. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label07_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-20-03-453.csv Completed graceful shutdown