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/Problem13_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:51:10,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:51:10,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:51:10,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:51:10,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:51:10,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:51:10,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:51:10,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:51:10,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:51:10,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:51:10,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:51:10,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:51:10,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:51:10,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:51:10,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:51:10,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:51:10,183 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:51:10,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:51:10,187 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:51:10,189 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:51:10,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:51:10,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:51:10,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:51:10,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:51:10,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:51:10,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:51:10,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:51:10,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:51:10,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:51:10,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:51:10,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:51:10,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:51:10,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:51:10,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:51:10,202 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:51:10,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:51:10,203 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:51:10,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:51:10,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:51:10,220 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:51:10,220 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:51:10,220 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:51:10,220 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:51:10,220 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:51:10,221 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:51:10,221 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:51:10,221 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:51:10,221 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:51:10,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:51:10,222 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:51:10,222 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:51:10,222 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:51:10,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:51:10,223 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:51:10,223 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:51:10,223 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:51:10,223 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:51:10,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:51:10,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:51:10,224 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:51:10,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:51:10,224 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:51:10,225 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:51:10,225 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:51:10,225 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:51:10,225 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:51:10,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:51:10,226 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:51:10,226 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:51:10,226 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:51:10,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:51:10,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:51:10,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:51:10,289 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:51:10,290 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:51:10,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-09-10 11:51:10,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4940f50e2/2be56a3d668944f88fde361b45872027/FLAG283169ffa [2018-09-10 11:51:11,185 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:51:11,186 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-09-10 11:51:11,232 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4940f50e2/2be56a3d668944f88fde361b45872027/FLAG283169ffa [2018-09-10 11:51:11,253 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4940f50e2/2be56a3d668944f88fde361b45872027 [2018-09-10 11:51:11,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:51:11,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:51:11,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:51:11,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:51:11,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:51:11,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:51:11" (1/1) ... [2018-09-10 11:51:11,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4554d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:11, skipping insertion in model container [2018-09-10 11:51:11,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:51:11" (1/1) ... [2018-09-10 11:51:11,696 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:51:12,824 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:51:12,845 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:51:13,668 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:51:14,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14 WrapperNode [2018-09-10 11:51:14,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:51:14,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:51:14,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:51:14,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:51:14,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:14,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:14,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:51:14,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:51:14,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:51:14,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:51:15,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... [2018-09-10 11:51:15,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:51:15,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:51:15,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:51:15,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:51:15,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:51:15,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:51:15,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:51:15,696 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:51:15,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:51:15,696 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_output3 [2018-09-10 11:51:15,696 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_output3 [2018-09-10 11:51:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:51:15,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:51:15,697 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_output4 [2018-09-10 11:51:15,697 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_output4 [2018-09-10 11:51:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:51:15,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:51:15,698 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 11:51:15,698 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 11:51:27,647 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:51:27,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:51:27 BoogieIcfgContainer [2018-09-10 11:51:27,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:51:27,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:51:27,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:51:27,652 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:51:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:51:11" (1/3) ... [2018-09-10 11:51:27,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeef3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:51:27, skipping insertion in model container [2018-09-10 11:51:27,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:51:14" (2/3) ... [2018-09-10 11:51:27,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeef3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:51:27, skipping insertion in model container [2018-09-10 11:51:27,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:51:27" (3/3) ... [2018-09-10 11:51:27,655 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-09-10 11:51:27,665 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:51:27,675 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:51:27,738 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:51:27,739 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:51:27,739 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:51:27,739 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:51:27,739 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:51:27,740 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:51:27,740 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:51:27,740 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:51:27,740 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:51:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:51:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-10 11:51:27,797 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:27,798 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] [2018-09-10 11:51:27,799 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:27,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1104306151, now seen corresponding path program 1 times [2018-09-10 11:51:27,807 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:27,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:27,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:27,863 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:28,281 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:51:28,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:51:28,281 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:51:28,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:51:28,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:51:28,303 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:51:28,306 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:51:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:41,807 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-10 11:51:41,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:51:41,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-09-10 11:51:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:41,855 INFO L225 Difference]: With dead ends: 3968 [2018-09-10 11:51:41,855 INFO L226 Difference]: Without dead ends: 2842 [2018-09-10 11:51:41,867 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:51:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-10 11:51:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-10 11:51:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-10 11:51:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-10 11:51:42,033 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 41 [2018-09-10 11:51:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:51:42,034 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-10 11:51:42,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:51:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-10 11:51:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-10 11:51:42,040 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:42,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:51:42,041 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 209538524, now seen corresponding path program 1 times [2018-09-10 11:51:42,042 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:42,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:42,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:42,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:42,043 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:42,346 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:51:42,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:51:42,346 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:51:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:51:42,348 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:51:42,348 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:51:42,349 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-09-10 11:51:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:59,453 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-09-10 11:51:59,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:51:59,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-09-10 11:51:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:59,486 INFO L225 Difference]: With dead ends: 7236 [2018-09-10 11:51:59,486 INFO L226 Difference]: Without dead ends: 5261 [2018-09-10 11:51:59,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:51:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-09-10 11:51:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-09-10 11:51:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-09-10 11:51:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-09-10 11:51:59,655 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 111 [2018-09-10 11:51:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:51:59,655 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-09-10 11:51:59,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:51:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-09-10 11:51:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 11:51:59,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:59,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:51:59,662 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:59,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2016143388, now seen corresponding path program 1 times [2018-09-10 11:51:59,662 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:59,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:59,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:59,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:59,664 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:59,939 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:51:59,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:51:59,940 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:51:59,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:51:59,941 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:51:59,941 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:51:59,941 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 5 states. [2018-09-10 11:52:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:16,759 INFO L93 Difference]: Finished difference Result 14851 states and 23632 transitions. [2018-09-10 11:52:16,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:52:16,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-09-10 11:52:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:16,805 INFO L225 Difference]: With dead ends: 14851 [2018-09-10 11:52:16,805 INFO L226 Difference]: Without dead ends: 9623 [2018-09-10 11:52:16,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:52:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9623 states. [2018-09-10 11:52:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9623 to 9521. [2018-09-10 11:52:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9521 states. [2018-09-10 11:52:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9521 states to 9521 states and 13562 transitions. [2018-09-10 11:52:17,052 INFO L78 Accepts]: Start accepts. Automaton has 9521 states and 13562 transitions. Word has length 143 [2018-09-10 11:52:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:17,053 INFO L480 AbstractCegarLoop]: Abstraction has 9521 states and 13562 transitions. [2018-09-10 11:52:17,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:52:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9521 states and 13562 transitions. [2018-09-10 11:52:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-10 11:52:17,061 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:17,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:52:17,062 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:17,062 INFO L82 PathProgramCache]: Analyzing trace with hash 966919352, now seen corresponding path program 1 times [2018-09-10 11:52:17,062 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:17,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:17,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:17,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:17,067 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:52:17,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:52:17,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:52:17,273 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:52:17,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:52:17,274 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:52:17,274 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:17,275 INFO L87 Difference]: Start difference. First operand 9521 states and 13562 transitions. Second operand 4 states. [2018-09-10 11:52:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:29,888 INFO L93 Difference]: Finished difference Result 37023 states and 55832 transitions. [2018-09-10 11:52:29,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:52:29,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-09-10 11:52:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:30,021 INFO L225 Difference]: With dead ends: 37023 [2018-09-10 11:52:30,021 INFO L226 Difference]: Without dead ends: 27508 [2018-09-10 11:52:30,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27508 states. [2018-09-10 11:52:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 27485. [2018-09-10 11:52:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27485 states. [2018-09-10 11:52:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27485 states to 27485 states and 37960 transitions. [2018-09-10 11:52:30,736 INFO L78 Accepts]: Start accepts. Automaton has 27485 states and 37960 transitions. Word has length 157 [2018-09-10 11:52:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:30,736 INFO L480 AbstractCegarLoop]: Abstraction has 27485 states and 37960 transitions. [2018-09-10 11:52:30,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:52:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27485 states and 37960 transitions. [2018-09-10 11:52:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-09-10 11:52:30,769 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:30,770 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:52:30,770 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:30,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1455784518, now seen corresponding path program 1 times [2018-09-10 11:52:30,771 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:30,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:30,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:30,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:30,772 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:31,240 WARN L175 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:52:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 69 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:52:31,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:31,794 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:52:31,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:31,808 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:32,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-10 11:52:32,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-10 11:52:32,777 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:52:32,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-10 11:52:32,777 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:52:32,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:52:32,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:52:32,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:52:32,780 INFO L87 Difference]: Start difference. First operand 27485 states and 37960 transitions. Second operand 3 states. [2018-09-10 11:52:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:37,446 INFO L93 Difference]: Finished difference Result 54952 states and 76023 transitions. [2018-09-10 11:52:37,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:52:37,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 385 [2018-09-10 11:52:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:37,533 INFO L225 Difference]: With dead ends: 54952 [2018-09-10 11:52:37,533 INFO L226 Difference]: Without dead ends: 27473 [2018-09-10 11:52:37,606 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 770 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:52:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27473 states. [2018-09-10 11:52:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27473 to 27473. [2018-09-10 11:52:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27473 states. [2018-09-10 11:52:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27473 states to 27473 states and 37930 transitions. [2018-09-10 11:52:38,152 INFO L78 Accepts]: Start accepts. Automaton has 27473 states and 37930 transitions. Word has length 385 [2018-09-10 11:52:38,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:38,153 INFO L480 AbstractCegarLoop]: Abstraction has 27473 states and 37930 transitions. [2018-09-10 11:52:38,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:52:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27473 states and 37930 transitions. [2018-09-10 11:52:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-09-10 11:52:38,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:38,209 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:52:38,210 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash -373710031, now seen corresponding path program 1 times [2018-09-10 11:52:38,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:38,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:38,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:38,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:38,211 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:38,612 WARN L175 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-09-10 11:52:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 11:52:38,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:38,715 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:52:38,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:38,732 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:38,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-10 11:52:39,215 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 11:52:39,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:52:39,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-10 11:52:39,958 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:52:39,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:52:39,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:52:39,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:39,960 INFO L87 Difference]: Start difference. First operand 27473 states and 37930 transitions. Second operand 3 states. [2018-09-10 11:52:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:51,037 INFO L93 Difference]: Finished difference Result 64726 states and 91138 transitions. [2018-09-10 11:52:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:52:51,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2018-09-10 11:52:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:51,242 INFO L225 Difference]: With dead ends: 64726 [2018-09-10 11:52:51,242 INFO L226 Difference]: Without dead ends: 37259 [2018-09-10 11:52:51,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37259 states. [2018-09-10 11:52:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37259 to 37259. [2018-09-10 11:52:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37259 states. [2018-09-10 11:52:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37259 states to 37259 states and 49673 transitions. [2018-09-10 11:52:52,200 INFO L78 Accepts]: Start accepts. Automaton has 37259 states and 49673 transitions. Word has length 480 [2018-09-10 11:52:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:52,201 INFO L480 AbstractCegarLoop]: Abstraction has 37259 states and 49673 transitions. [2018-09-10 11:52:52,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:52:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 37259 states and 49673 transitions. [2018-09-10 11:52:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-09-10 11:52:52,264 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:52,265 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:52:52,265 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:52,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2138692099, now seen corresponding path program 1 times [2018-09-10 11:52:52,265 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:52,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:52,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:52,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:52,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:53,138 WARN L175 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:52:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 104 proven. 36 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-10 11:52:53,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:53,898 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:52:53,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:53,909 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:54,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 11:52:54,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 11:52:54,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:54,861 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:52:54,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:54,877 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:55,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:52:55,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 272 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:52:56,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:52:56,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 11:52:56,443 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:52:56,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:52:56,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:52:56,445 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:52:56,445 INFO L87 Difference]: Start difference. First operand 37259 states and 49673 transitions. Second operand 9 states. [2018-09-10 11:53:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:53:20,155 INFO L93 Difference]: Finished difference Result 118888 states and 178026 transitions. [2018-09-10 11:53:20,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-10 11:53:20,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 495 [2018-09-10 11:53:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:53:20,841 INFO L225 Difference]: With dead ends: 118888 [2018-09-10 11:53:20,841 INFO L226 Difference]: Without dead ends: 80811 [2018-09-10 11:53:20,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2048 GetRequests, 2000 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2018-09-10 11:53:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80811 states. [2018-09-10 11:53:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80811 to 80419. [2018-09-10 11:53:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80419 states. [2018-09-10 11:53:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80419 states to 80419 states and 106125 transitions. [2018-09-10 11:53:22,459 INFO L78 Accepts]: Start accepts. Automaton has 80419 states and 106125 transitions. Word has length 495 [2018-09-10 11:53:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:53:22,460 INFO L480 AbstractCegarLoop]: Abstraction has 80419 states and 106125 transitions. [2018-09-10 11:53:22,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:53:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 80419 states and 106125 transitions. [2018-09-10 11:53:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-09-10 11:53:22,595 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:22,596 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:53:22,596 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:53:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash -546882510, now seen corresponding path program 1 times [2018-09-10 11:53:22,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:22,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:22,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:22,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:22,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:53:23,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:53:23,181 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:53:23,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:23,191 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:53:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:23,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:53:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 11:53:24,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:53:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-09-10 11:53:25,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:53:25,468 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:53:25,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:25,485 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:53:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:25,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:53:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:53:26,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:53:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 272 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 11:53:26,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:53:26,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:53:26,848 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:53:26,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:53:26,849 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:53:26,850 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:53:26,850 INFO L87 Difference]: Start difference. First operand 80419 states and 106125 transitions. Second operand 9 states. [2018-09-10 11:53:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:53:45,389 INFO L93 Difference]: Finished difference Result 172746 states and 246857 transitions. [2018-09-10 11:53:45,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 11:53:45,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 531 [2018-09-10 11:53:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:53:45,827 INFO L225 Difference]: With dead ends: 172746 [2018-09-10 11:53:45,827 INFO L226 Difference]: Without dead ends: 92333 [2018-09-10 11:53:46,015 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2150 GetRequests, 2121 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:53:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92333 states. [2018-09-10 11:53:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92333 to 91091. [2018-09-10 11:53:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91091 states. [2018-09-10 11:53:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91091 states to 91091 states and 123348 transitions. [2018-09-10 11:53:48,643 INFO L78 Accepts]: Start accepts. Automaton has 91091 states and 123348 transitions. Word has length 531 [2018-09-10 11:53:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:53:48,644 INFO L480 AbstractCegarLoop]: Abstraction has 91091 states and 123348 transitions. [2018-09-10 11:53:48,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:53:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 91091 states and 123348 transitions. [2018-09-10 11:53:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-09-10 11:53:48,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:48,761 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:53:48,761 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:53:48,762 INFO L82 PathProgramCache]: Analyzing trace with hash -521841467, now seen corresponding path program 1 times [2018-09-10 11:53:48,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:48,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:48,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:48,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:48,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 100 proven. 192 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-09-10 11:53:49,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:53:49,397 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:53:49,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:49,407 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:53:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:49,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:53:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-09-10 11:53:49,977 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:53:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-09-10 11:53:50,306 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:53:50,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-10 11:53:50,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:53:50,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:53:50,307 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:53:50,307 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:53:50,308 INFO L87 Difference]: Start difference. First operand 91091 states and 123348 transitions. Second operand 3 states. [2018-09-10 11:53:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:53:58,270 INFO L93 Difference]: Finished difference Result 189482 states and 257798 transitions. [2018-09-10 11:53:58,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:53:58,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-09-10 11:53:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:53:58,690 INFO L225 Difference]: With dead ends: 189482 [2018-09-10 11:53:58,690 INFO L226 Difference]: Without dead ends: 98402 [2018-09-10 11:53:58,921 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1107 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:53:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98402 states. [2018-09-10 11:54:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98402 to 97593. [2018-09-10 11:54:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97593 states. [2018-09-10 11:54:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97593 states to 97593 states and 131062 transitions. [2018-09-10 11:54:00,607 INFO L78 Accepts]: Start accepts. Automaton has 97593 states and 131062 transitions. Word has length 553 [2018-09-10 11:54:00,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:00,608 INFO L480 AbstractCegarLoop]: Abstraction has 97593 states and 131062 transitions. [2018-09-10 11:54:00,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:54:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 97593 states and 131062 transitions. [2018-09-10 11:54:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-09-10 11:54:01,867 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:01,867 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:54:01,868 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:54:01,868 INFO L82 PathProgramCache]: Analyzing trace with hash -701149114, now seen corresponding path program 1 times [2018-09-10 11:54:01,868 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:01,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:01,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:01,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:01,869 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-10 11:54:02,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:54:02,805 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:54:02,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:02,815 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:54:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:03,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:54:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-10 11:54:03,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:54:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 112 proven. 293 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:54:04,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:54:04,370 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:54:04,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:04,387 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:54:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:04,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:54:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-10 11:54:05,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:54:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 112 proven. 293 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:54:06,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:54:06,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 7, 8] total 16 [2018-09-10 11:54:06,870 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:54:06,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:54:06,871 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:54:06,871 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:54:06,872 INFO L87 Difference]: Start difference. First operand 97593 states and 131062 transitions. Second operand 11 states. Received shutdown request... [2018-09-10 11:54:58,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-10 11:54:58,820 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:54:58,827 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:54:58,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:54:58 BoogieIcfgContainer [2018-09-10 11:54:58,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:54:58,828 INFO L168 Benchmark]: Toolchain (without parser) took 227559.97 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 59.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,830 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:54:58,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2771.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,832 INFO L168 Benchmark]: Boogie Preprocessor took 1263.25 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,833 INFO L168 Benchmark]: RCFGBuilder took 12018.59 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 96.0 MB). Peak memory consumption was 744.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,834 INFO L168 Benchmark]: TraceAbstraction took 211178.99 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 854.6 MB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 907.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:54:58,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2771.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1263.25 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12018.59 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 96.0 MB). Peak memory consumption was 744.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211178.99 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 854.6 MB). Free memory was 2.2 GB in the beginning and 1.3 GB in the end (delta: 907.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (97593states) and FLOYD_HOARE automaton (currently 64 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (126871 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 180.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7378 SDtfs, 44764 SDslu, 5982 SDs, 0 SdLazy, 83603 SolverSat, 18499 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 147.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9465 GetRequests, 9273 SyntacticMatches, 26 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2268 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97593occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 3456 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 8064 NumberOfCodeBlocks, 8064 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 12638 ConstructedInterpolants, 222 QuantifiedInterpolants, 19342411 SizeOfPredicates, 16 NumberOfNonLiveVariables, 7021 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 28 InterpolantComputations, 9 PerfectInterpolantSequences, 7218/8099 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-54-58-854.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-54-58-854.csv Completed graceful shutdown