java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:21:59,112 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:21:59,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:21:59,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:21:59,136 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:21:59,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:21:59,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:21:59,141 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:21:59,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:21:59,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:21:59,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:21:59,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:21:59,157 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:21:59,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:21:59,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:21:59,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:21:59,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:21:59,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:21:59,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:21:59,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:21:59,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:21:59,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:21:59,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:21:59,187 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:21:59,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:21:59,188 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:21:59,189 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:21:59,190 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:21:59,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:21:59,192 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:21:59,192 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:21:59,193 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:21:59,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:21:59,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:21:59,196 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:21:59,197 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:21:59,197 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:21:59,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:21:59,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:21:59,231 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:21:59,231 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:21:59,232 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:21:59,232 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:21:59,232 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:21:59,232 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:21:59,233 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:21:59,233 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:21:59,233 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:21:59,234 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:21:59,235 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:21:59,235 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:21:59,235 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:21:59,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:21:59,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:21:59,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:21:59,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:21:59,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:21:59,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:21:59,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:21:59,239 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:21:59,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:21:59,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:21:59,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:21:59,239 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:21:59,240 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:21:59,240 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:21:59,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:21:59,240 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:21:59,240 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:21:59,241 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:21:59,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:21:59,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:21:59,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:21:59,334 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:21:59,334 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:21:59,335 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-07-24 14:21:59,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10491bc4b/809222faa3354cf196a6c2a4a749bc33/FLAGa94168bc9 [2018-07-24 14:22:00,167 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:22:00,168 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-07-24 14:22:00,212 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10491bc4b/809222faa3354cf196a6c2a4a749bc33/FLAGa94168bc9 [2018-07-24 14:22:00,238 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10491bc4b/809222faa3354cf196a6c2a4a749bc33 [2018-07-24 14:22:00,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:22:00,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:22:00,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:00,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:22:00,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:22:00,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:00" (1/1) ... [2018-07-24 14:22:00,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f918427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:00, skipping insertion in model container [2018-07-24 14:22:00,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:00" (1/1) ... [2018-07-24 14:22:00,629 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:22:01,764 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:01,783 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:22:02,662 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:02,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02 WrapperNode [2018-07-24 14:22:02,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:02,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:22:02,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:22:02,993 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:22:03,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:03,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:03,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:22:03,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:22:03,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:22:03,446 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:22:04,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... [2018-07-24 14:22:04,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:22:04,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:22:04,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:22:04,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:22:04,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:22:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:22:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:22:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:22:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:22:04,903 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 [2018-07-24 14:22:04,903 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 [2018-07-24 14:22:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:22:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:22:04,903 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 [2018-07-24 14:22:04,904 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 [2018-07-24 14:22:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:22:04,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:22:04,904 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 [2018-07-24 14:22:04,904 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 [2018-07-24 14:22:19,360 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:22:19,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:22:19 BoogieIcfgContainer [2018-07-24 14:22:19,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:22:19,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:22:19,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:22:19,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:22:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:22:00" (1/3) ... [2018-07-24 14:22:19,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786223e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:22:19, skipping insertion in model container [2018-07-24 14:22:19,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:02" (2/3) ... [2018-07-24 14:22:19,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786223e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:22:19, skipping insertion in model container [2018-07-24 14:22:19,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:22:19" (3/3) ... [2018-07-24 14:22:19,369 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-07-24 14:22:19,379 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:22:19,388 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:22:19,453 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:22:19,453 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:22:19,454 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:22:19,454 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:22:19,454 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:22:19,454 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:22:19,454 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:22:19,454 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:22:19,454 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:22:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:22:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-24 14:22:19,515 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:19,516 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:19,516 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1552878732, now seen corresponding path program 1 times [2018-07-24 14:22:19,523 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:19,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:19,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:20,151 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:20,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:22:20,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:20,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:22:20,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:22:20,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:22:20,177 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 14:22:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:40,093 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-07-24 14:22:40,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:22:40,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-07-24 14:22:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:40,155 INFO L225 Difference]: With dead ends: 4105 [2018-07-24 14:22:40,156 INFO L226 Difference]: Without dead ends: 2979 [2018-07-24 14:22:40,172 INFO L573 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 [2018-07-24 14:22:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-07-24 14:22:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-07-24 14:22:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-07-24 14:22:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-07-24 14:22:40,384 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 72 [2018-07-24 14:22:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:40,386 INFO L471 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-07-24 14:22:40,386 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:22:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-07-24 14:22:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 14:22:40,397 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:40,398 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:22:40,398 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -588115633, now seen corresponding path program 1 times [2018-07-24 14:22:40,399 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:40,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:40,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:40,728 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:22:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:40,931 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:40,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:22:40,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:40,933 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:22:40,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:22:40,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:22:40,934 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-07-24 14:23:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:01,511 INFO L93 Difference]: Finished difference Result 10644 states and 19598 transitions. [2018-07-24 14:23:01,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:23:01,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-24 14:23:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:01,570 INFO L225 Difference]: With dead ends: 10644 [2018-07-24 14:23:01,571 INFO L226 Difference]: Without dead ends: 7801 [2018-07-24 14:23:01,592 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:01,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2018-07-24 14:23:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 7735. [2018-07-24 14:23:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7735 states. [2018-07-24 14:23:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12389 transitions. [2018-07-24 14:23:01,860 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 12389 transitions. Word has length 143 [2018-07-24 14:23:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:01,861 INFO L471 AbstractCegarLoop]: Abstraction has 7735 states and 12389 transitions. [2018-07-24 14:23:01,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 12389 transitions. [2018-07-24 14:23:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-24 14:23:01,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:01,874 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:01,874 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 244898816, now seen corresponding path program 1 times [2018-07-24 14:23:01,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:01,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:01,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:01,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:01,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:02,189 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:02,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:02,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:02,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:02,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:02,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:02,191 INFO L87 Difference]: Start difference. First operand 7735 states and 12389 transitions. Second operand 6 states. [2018-07-24 14:23:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:17,521 INFO L93 Difference]: Finished difference Result 25349 states and 42505 transitions. [2018-07-24 14:23:17,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:23:17,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-07-24 14:23:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:17,621 INFO L225 Difference]: With dead ends: 25349 [2018-07-24 14:23:17,623 INFO L226 Difference]: Without dead ends: 17620 [2018-07-24 14:23:17,678 INFO L573 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 [2018-07-24 14:23:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17620 states. [2018-07-24 14:23:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17620 to 17539. [2018-07-24 14:23:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17539 states. [2018-07-24 14:23:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17539 states to 17539 states and 26137 transitions. [2018-07-24 14:23:18,117 INFO L78 Accepts]: Start accepts. Automaton has 17539 states and 26137 transitions. Word has length 146 [2018-07-24 14:23:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:18,117 INFO L471 AbstractCegarLoop]: Abstraction has 17539 states and 26137 transitions. [2018-07-24 14:23:18,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 17539 states and 26137 transitions. [2018-07-24 14:23:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 14:23:18,128 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:18,128 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:23:18,129 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2024237781, now seen corresponding path program 1 times [2018-07-24 14:23:18,129 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:18,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:18,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:18,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:18,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:18,463 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:18,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:18,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:18,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:18,537 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:18,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:18,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:18,537 INFO L87 Difference]: Start difference. First operand 17539 states and 26137 transitions. Second operand 6 states. [2018-07-24 14:23:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:28,277 INFO L93 Difference]: Finished difference Result 45777 states and 75755 transitions. [2018-07-24 14:23:28,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:28,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-07-24 14:23:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:28,436 INFO L225 Difference]: With dead ends: 45777 [2018-07-24 14:23:28,437 INFO L226 Difference]: Without dead ends: 28244 [2018-07-24 14:23:28,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28244 states. [2018-07-24 14:23:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28244 to 28080. [2018-07-24 14:23:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28080 states. [2018-07-24 14:23:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28080 states to 28080 states and 42434 transitions. [2018-07-24 14:23:29,264 INFO L78 Accepts]: Start accepts. Automaton has 28080 states and 42434 transitions. Word has length 210 [2018-07-24 14:23:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:29,265 INFO L471 AbstractCegarLoop]: Abstraction has 28080 states and 42434 transitions. [2018-07-24 14:23:29,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 28080 states and 42434 transitions. [2018-07-24 14:23:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-24 14:23:29,281 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:29,282 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:29,282 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1197741896, now seen corresponding path program 1 times [2018-07-24 14:23:29,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:29,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:29,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:29,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:29,805 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:29,805 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:23:29,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:29,827 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:29,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-07-24 14:23:30,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:30,635 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:23:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:31,147 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:23:31,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 14:23:31,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:31,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:23:31,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:23:31,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:31,149 INFO L87 Difference]: Start difference. First operand 28080 states and 42434 transitions. Second operand 5 states. [2018-07-24 14:23:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:48,055 INFO L93 Difference]: Finished difference Result 81488 states and 137127 transitions. [2018-07-24 14:23:48,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:23:48,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2018-07-24 14:23:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:48,381 INFO L225 Difference]: With dead ends: 81488 [2018-07-24 14:23:48,382 INFO L226 Difference]: Without dead ends: 53414 [2018-07-24 14:23:48,525 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:23:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53414 states. [2018-07-24 14:23:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53414 to 53118. [2018-07-24 14:23:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53118 states. [2018-07-24 14:23:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53118 states to 53118 states and 80400 transitions. [2018-07-24 14:23:50,196 INFO L78 Accepts]: Start accepts. Automaton has 53118 states and 80400 transitions. Word has length 234 [2018-07-24 14:23:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:50,197 INFO L471 AbstractCegarLoop]: Abstraction has 53118 states and 80400 transitions. [2018-07-24 14:23:50,197 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 53118 states and 80400 transitions. [2018-07-24 14:23:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-24 14:23:50,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:50,238 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:23:50,238 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:50,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1010630079, now seen corresponding path program 1 times [2018-07-24 14:23:50,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:50,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:50,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:50,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:50,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:50,576 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:51,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:51,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:51,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:51,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:51,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:51,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:51,054 INFO L87 Difference]: Start difference. First operand 53118 states and 80400 transitions. Second operand 6 states. [2018-07-24 14:24:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:05,981 INFO L93 Difference]: Finished difference Result 133951 states and 218213 transitions. [2018-07-24 14:24:05,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:24:05,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 272 [2018-07-24 14:24:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:06,365 INFO L225 Difference]: With dead ends: 133951 [2018-07-24 14:24:06,366 INFO L226 Difference]: Without dead ends: 80839 [2018-07-24 14:24:06,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:24:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80839 states. [2018-07-24 14:24:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80839 to 80529. [2018-07-24 14:24:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80529 states. [2018-07-24 14:24:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80529 states to 80529 states and 121534 transitions. [2018-07-24 14:24:08,959 INFO L78 Accepts]: Start accepts. Automaton has 80529 states and 121534 transitions. Word has length 272 [2018-07-24 14:24:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:08,960 INFO L471 AbstractCegarLoop]: Abstraction has 80529 states and 121534 transitions. [2018-07-24 14:24:08,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:24:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 80529 states and 121534 transitions. [2018-07-24 14:24:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-24 14:24:08,991 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:08,992 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:08,992 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash 456670910, now seen corresponding path program 1 times [2018-07-24 14:24:08,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:08,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:08,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:08,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:09,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:10,403 WARN L169 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-24 14:24:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 207 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:10,859 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:10,859 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:10,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:10,869 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:10,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:24:11,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:24:11,325 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:24:11,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-07-24 14:24:11,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:11,327 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:11,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:11,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:24:11,327 INFO L87 Difference]: Start difference. First operand 80529 states and 121534 transitions. Second operand 3 states. [2018-07-24 14:24:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:21,318 INFO L93 Difference]: Finished difference Result 185280 states and 288255 transitions. [2018-07-24 14:24:21,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:24:21,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2018-07-24 14:24:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:21,767 INFO L225 Difference]: With dead ends: 185280 [2018-07-24 14:24:21,767 INFO L226 Difference]: Without dead ends: 104757 [2018-07-24 14:24:21,956 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:24:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104757 states. [2018-07-24 14:24:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104757 to 104744. [2018-07-24 14:24:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104744 states. [2018-07-24 14:24:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104744 states to 104744 states and 146848 transitions. [2018-07-24 14:24:24,631 INFO L78 Accepts]: Start accepts. Automaton has 104744 states and 146848 transitions. Word has length 283 [2018-07-24 14:24:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:24,631 INFO L471 AbstractCegarLoop]: Abstraction has 104744 states and 146848 transitions. [2018-07-24 14:24:24,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:24:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 104744 states and 146848 transitions. [2018-07-24 14:24:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-24 14:24:24,713 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:24,713 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:24,713 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 265630841, now seen corresponding path program 1 times [2018-07-24 14:24:24,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:24,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:24,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 14:24:25,147 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:25,147 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:25,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:25,155 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:25,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-07-24 14:24:25,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 14:24:25,984 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:25,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-07-24 14:24:25,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:25,985 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:25,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:25,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:24:25,986 INFO L87 Difference]: Start difference. First operand 104744 states and 146848 transitions. Second operand 5 states. [2018-07-24 14:24:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:43,488 INFO L93 Difference]: Finished difference Result 252598 states and 353250 transitions. [2018-07-24 14:24:43,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:24:43,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2018-07-24 14:24:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:44,006 INFO L225 Difference]: With dead ends: 252598 [2018-07-24 14:24:44,006 INFO L226 Difference]: Without dead ends: 147860 [2018-07-24 14:24:44,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 709 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:24:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147860 states. [2018-07-24 14:24:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147860 to 147768. [2018-07-24 14:24:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147768 states. [2018-07-24 14:24:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147768 states to 147768 states and 195502 transitions. [2018-07-24 14:24:47,662 INFO L78 Accepts]: Start accepts. Automaton has 147768 states and 195502 transitions. Word has length 356 [2018-07-24 14:24:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:47,662 INFO L471 AbstractCegarLoop]: Abstraction has 147768 states and 195502 transitions. [2018-07-24 14:24:47,662 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:24:47,662 INFO L276 IsEmpty]: Start isEmpty. Operand 147768 states and 195502 transitions. [2018-07-24 14:24:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-24 14:24:47,775 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:47,775 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 14:24:47,776 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:47,776 INFO L82 PathProgramCache]: Analyzing trace with hash 109163525, now seen corresponding path program 1 times [2018-07-24 14:24:47,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:47,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:47,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:47,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:47,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-07-24 14:24:48,168 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:24:48,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:24:48,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:48,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:48,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:48,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:24:48,170 INFO L87 Difference]: Start difference. First operand 147768 states and 195502 transitions. Second operand 3 states. [2018-07-24 14:25:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:00,711 INFO L93 Difference]: Finished difference Result 300572 states and 420705 transitions. [2018-07-24 14:25:00,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:00,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 440 [2018-07-24 14:25:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:01,459 INFO L225 Difference]: With dead ends: 300572 [2018-07-24 14:25:01,460 INFO L226 Difference]: Without dead ends: 181659 [2018-07-24 14:25:01,723 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:25:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181659 states. [2018-07-24 14:25:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181659 to 180852. [2018-07-24 14:25:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180852 states. [2018-07-24 14:25:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180852 states to 180852 states and 241582 transitions. [2018-07-24 14:25:11,445 INFO L78 Accepts]: Start accepts. Automaton has 180852 states and 241582 transitions. Word has length 440 [2018-07-24 14:25:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:11,446 INFO L471 AbstractCegarLoop]: Abstraction has 180852 states and 241582 transitions. [2018-07-24 14:25:11,446 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:25:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 180852 states and 241582 transitions. [2018-07-24 14:25:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-07-24 14:25:11,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:11,504 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 14:25:11,504 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1856255035, now seen corresponding path program 1 times [2018-07-24 14:25:11,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:11,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:11,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:11,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:11,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:11,890 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:25:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 426 proven. 223 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 14:25:13,360 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:13,360 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:13,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:13,372 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:13,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-07-24 14:25:13,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-07-24 14:25:14,642 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:25:14,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:25:14,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:14,643 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:25:14,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:25:14,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:25:14,644 INFO L87 Difference]: Start difference. First operand 180852 states and 241582 transitions. Second operand 3 states. [2018-07-24 14:25:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:25,555 INFO L93 Difference]: Finished difference Result 364347 states and 492984 transitions. [2018-07-24 14:25:25,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:25,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 454 [2018-07-24 14:25:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:26,058 INFO L225 Difference]: With dead ends: 364347 [2018-07-24 14:25:26,058 INFO L226 Difference]: Without dead ends: 183501 [2018-07-24 14:25:26,323 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 909 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:25:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183501 states. [2018-07-24 14:25:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183501 to 180262. [2018-07-24 14:25:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180262 states. [2018-07-24 14:25:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180262 states to 180262 states and 228071 transitions. [2018-07-24 14:25:29,511 INFO L78 Accepts]: Start accepts. Automaton has 180262 states and 228071 transitions. Word has length 454 [2018-07-24 14:25:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:29,512 INFO L471 AbstractCegarLoop]: Abstraction has 180262 states and 228071 transitions. [2018-07-24 14:25:29,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:25:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 180262 states and 228071 transitions. [2018-07-24 14:25:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-07-24 14:25:29,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:29,552 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 14:25:29,552 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1921963026, now seen corresponding path program 1 times [2018-07-24 14:25:29,553 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:29,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:29,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:29,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:29,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:30,365 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:30,365 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:25:30,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:30,377 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:30,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:31,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:31,739 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:31,739 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:25:31,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:31,755 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:32,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:32,348 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:32,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:25:32,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:25:32,872 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:25:32,873 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:25:32,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:25:32,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:25:32,874 INFO L87 Difference]: Start difference. First operand 180262 states and 228071 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 14:25:38,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 14:25:38,898 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:25:38,903 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:25:38,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:25:38 BoogieIcfgContainer [2018-07-24 14:25:38,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:25:38,905 INFO L168 Benchmark]: Toolchain (without parser) took 218652.75 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:38,906 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-07-24 14:25:38,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2736.83 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:38,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 452.41 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. [2018-07-24 14:25:38,908 INFO L168 Benchmark]: Boogie Preprocessor took 1393.49 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 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:38,909 INFO L168 Benchmark]: RCFGBuilder took 14522.30 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 158.3 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 88.9 MB). Peak memory consumption was 749.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:38,910 INFO L168 Benchmark]: TraceAbstraction took 199541.92 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -485.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:38,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2736.83 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 452.41 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 1393.49 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 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14522.30 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 158.3 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 88.9 MB). Peak memory consumption was 749.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199541.92 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -485.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (180262states) and interpolant automaton (currently 19 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (45948 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 199.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 159.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7960 SDtfs, 34814 SDslu, 4469 SDs, 0 SdLazy, 54069 SolverSat, 13787 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 127.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4669 GetRequests, 4563 SyntacticMatches, 19 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180852occurred 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: 24.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 5198 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 5359 NumberOfCodeBlocks, 5359 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7611 ConstructedInterpolants, 0 QuantifiedInterpolants, 7655737 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3911 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 8667/9353 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_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-25-38-933.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-25-38-933.csv Completed graceful shutdown