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_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:58:28,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:58:28,158 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:58:28,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:58:28,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:58:28,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:58:28,173 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:58:28,175 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:58:28,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:58:28,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:58:28,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:58:28,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:58:28,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:58:28,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:58:28,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:58:28,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:58:28,183 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:58:28,187 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:58:28,195 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:58:28,197 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:58:28,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:58:28,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:58:28,201 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:58:28,202 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:58:28,202 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:58:28,203 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:58:28,204 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:58:28,205 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:58:28,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:58:28,211 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:58:28,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:58:28,212 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:58:28,212 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:58:28,212 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:58:28,214 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:58:28,214 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:58:28,215 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 11:58:28,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:58:28,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:58:28,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:58:28,247 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:58:28,247 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:58:28,247 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:58:28,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:58:28,248 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:58:28,248 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:58:28,248 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:58:28,248 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:58:28,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:58:28,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:58:28,249 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:58:28,249 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:58:28,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:58:28,250 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:58:28,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:58:28,250 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:58:28,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:58:28,251 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:58:28,251 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:58:28,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:58:28,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:58:28,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:58:28,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:58:28,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:58:28,252 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:58:28,252 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:58:28,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:58:28,253 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:58:28,253 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:58:28,253 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:58:28,316 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:58:28,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:58:28,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:58:28,343 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:58:28,344 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:58:28,345 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-09-10 11:58:28,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ddb1fe2/48c07e8c6bbd4cb3a9d1a5617bc64e78/FLAGb6bb32ee3 [2018-09-10 11:58:29,234 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:58:29,235 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-09-10 11:58:29,272 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ddb1fe2/48c07e8c6bbd4cb3a9d1a5617bc64e78/FLAGb6bb32ee3 [2018-09-10 11:58:29,288 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ddb1fe2/48c07e8c6bbd4cb3a9d1a5617bc64e78 [2018-09-10 11:58:29,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:58:29,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:58:29,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:29,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:58:29,313 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:58:29,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:29" (1/1) ... [2018-09-10 11:58:29,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5df79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:29, skipping insertion in model container [2018-09-10 11:58:29,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:29" (1/1) ... [2018-09-10 11:58:29,727 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:58:31,013 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:31,031 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:58:31,793 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:32,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32 WrapperNode [2018-09-10 11:58:32,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:32,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:32,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:58:32,213 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:58:32,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:32,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:32,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:32,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:58:32,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:58:32,492 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:58:33,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (1/1) ... [2018-09-10 11:58:33,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:58:33,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:58:33,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:58:33,773 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:58:33,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (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 11:58:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:58:33,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:58:33,845 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 11:58:33,845 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 11:58:33,845 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 11:58:33,845 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 11:58:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:58:33,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:58:33,846 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 11:58:33,846 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 11:58:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:58:33,847 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 11:58:33,847 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 11:58:50,079 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:58:50,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:58:50 BoogieIcfgContainer [2018-09-10 11:58:50,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:58:50,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:58:50,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:58:50,083 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:58:50,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:58:29" (1/3) ... [2018-09-10 11:58:50,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5928daf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:58:50, skipping insertion in model container [2018-09-10 11:58:50,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:32" (2/3) ... [2018-09-10 11:58:50,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5928daf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:58:50, skipping insertion in model container [2018-09-10 11:58:50,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:58:50" (3/3) ... [2018-09-10 11:58:50,087 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-09-10 11:58:50,099 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:58:50,109 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:58:50,175 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:58:50,176 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:58:50,176 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:58:50,176 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:58:50,176 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:58:50,176 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:58:50,177 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:58:50,177 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:58:50,177 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:58:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:58:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-10 11:58:50,232 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:50,233 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:50,235 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 11:58:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1174837497, now seen corresponding path program 1 times [2018-09-10 11:58:50,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:50,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:50,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:50,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:50,303 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:50,797 WARN L175 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:58:50,945 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 11:58:50,948 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:50,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:58:50,948 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:50,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:58:50,971 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:58:50,972 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:58:50,975 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:59:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:00,901 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-10 11:59:00,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:59:00,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-09-10 11:59:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:00,943 INFO L225 Difference]: With dead ends: 3097 [2018-09-10 11:59:00,943 INFO L226 Difference]: Without dead ends: 1975 [2018-09-10 11:59:00,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:59:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-10 11:59:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-10 11:59:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-10 11:59:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-10 11:59:01,154 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 65 [2018-09-10 11:59:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:01,158 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-10 11:59:01,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:59:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-10 11:59:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-10 11:59:01,167 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:01,168 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:01,168 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 11:59:01,169 INFO L82 PathProgramCache]: Analyzing trace with hash 391861832, now seen corresponding path program 1 times [2018-09-10 11:59:01,169 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:01,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:01,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:01,171 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:01,467 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:01,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:59:01,467 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:01,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:01,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:01,470 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:59:01,473 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-10 11:59:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:19,377 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-09-10 11:59:19,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:19,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-09-10 11:59:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:19,412 INFO L225 Difference]: With dead ends: 5737 [2018-09-10 11:59:19,412 INFO L226 Difference]: Without dead ends: 3769 [2018-09-10 11:59:19,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-09-10 11:59:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-09-10 11:59:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-09-10 11:59:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-09-10 11:59:19,557 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 141 [2018-09-10 11:59:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:19,557 INFO L480 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-09-10 11:59:19,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-09-10 11:59:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-10 11:59:19,572 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:19,573 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:19,573 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 11:59:19,573 INFO L82 PathProgramCache]: Analyzing trace with hash 415708260, now seen corresponding path program 1 times [2018-09-10 11:59:19,574 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:19,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:19,575 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:19,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:19,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:59:19,820 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:19,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:19,821 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:19,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:59:19,821 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-09-10 11:59:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:37,873 INFO L93 Difference]: Finished difference Result 12383 states and 19152 transitions. [2018-09-10 11:59:37,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:37,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-09-10 11:59:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:37,921 INFO L225 Difference]: With dead ends: 12383 [2018-09-10 11:59:37,922 INFO L226 Difference]: Without dead ends: 8704 [2018-09-10 11:59:37,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2018-09-10 11:59:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 8667. [2018-09-10 11:59:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8667 states. [2018-09-10 11:59:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 12395 transitions. [2018-09-10 11:59:38,175 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 12395 transitions. Word has length 155 [2018-09-10 11:59:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:38,176 INFO L480 AbstractCegarLoop]: Abstraction has 8667 states and 12395 transitions. [2018-09-10 11:59:38,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 12395 transitions. [2018-09-10 11:59:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-09-10 11:59:38,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:38,181 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:38,181 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 11:59:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2095936380, now seen corresponding path program 1 times [2018-09-10 11:59:38,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:38,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:38,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:38,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:38,183 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:38,512 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:38,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:59:38,512 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:38,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:38,513 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:38,513 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:59:38,514 INFO L87 Difference]: Start difference. First operand 8667 states and 12395 transitions. Second operand 5 states. [2018-09-10 12:00:15,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:15,124 INFO L93 Difference]: Finished difference Result 31347 states and 47350 transitions. [2018-09-10 12:00:15,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:15,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2018-09-10 12:00:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:15,221 INFO L225 Difference]: With dead ends: 31347 [2018-09-10 12:00:15,221 INFO L226 Difference]: Without dead ends: 22686 [2018-09-10 12:00:15,269 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22686 states. [2018-09-10 12:00:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22686 to 22404. [2018-09-10 12:00:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22404 states. [2018-09-10 12:00:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 31712 transitions. [2018-09-10 12:00:15,827 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 31712 transitions. Word has length 171 [2018-09-10 12:00:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:15,828 INFO L480 AbstractCegarLoop]: Abstraction has 22404 states and 31712 transitions. [2018-09-10 12:00:15,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 31712 transitions. [2018-09-10 12:00:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-10 12:00:15,835 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:15,835 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:00:15,835 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:15,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1073741704, now seen corresponding path program 1 times [2018-09-10 12:00:15,836 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:15,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:15,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:15,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:15,837 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:16,168 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:16,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:00:16,168 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:16,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:00:16,169 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:00:16,169 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:00:16,170 INFO L87 Difference]: Start difference. First operand 22404 states and 31712 transitions. Second operand 5 states. [2018-09-10 12:00:48,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:48,016 INFO L93 Difference]: Finished difference Result 62900 states and 92455 transitions. [2018-09-10 12:00:48,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:48,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2018-09-10 12:00:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:48,158 INFO L225 Difference]: With dead ends: 62900 [2018-09-10 12:00:48,159 INFO L226 Difference]: Without dead ends: 40502 [2018-09-10 12:00:48,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40502 states. [2018-09-10 12:00:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40502 to 40347. [2018-09-10 12:00:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40347 states. [2018-09-10 12:00:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 58367 transitions. [2018-09-10 12:00:49,102 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 58367 transitions. Word has length 173 [2018-09-10 12:00:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:49,102 INFO L480 AbstractCegarLoop]: Abstraction has 40347 states and 58367 transitions. [2018-09-10 12:00:49,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 58367 transitions. [2018-09-10 12:00:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-09-10 12:00:49,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:49,425 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:00:49,425 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:49,426 INFO L82 PathProgramCache]: Analyzing trace with hash -269487951, now seen corresponding path program 1 times [2018-09-10 12:00:49,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:49,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:49,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:49,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:49,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:49,768 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:50,195 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:50,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:00:50,196 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:50,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:00:50,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:00:50,197 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:00:50,197 INFO L87 Difference]: Start difference. First operand 40347 states and 58367 transitions. Second operand 6 states. [2018-09-10 12:01:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:02,451 INFO L93 Difference]: Finished difference Result 101430 states and 163813 transitions. [2018-09-10 12:01:02,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:01:02,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-09-10 12:01:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:02,714 INFO L225 Difference]: With dead ends: 101430 [2018-09-10 12:01:02,714 INFO L226 Difference]: Without dead ends: 61089 [2018-09-10 12:01:02,825 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:01:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61089 states. [2018-09-10 12:01:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61089 to 60893. [2018-09-10 12:01:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60893 states. [2018-09-10 12:01:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60893 states to 60893 states and 88513 transitions. [2018-09-10 12:01:04,502 INFO L78 Accepts]: Start accepts. Automaton has 60893 states and 88513 transitions. Word has length 192 [2018-09-10 12:01:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:04,503 INFO L480 AbstractCegarLoop]: Abstraction has 60893 states and 88513 transitions. [2018-09-10 12:01:04,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:01:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 60893 states and 88513 transitions. [2018-09-10 12:01:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-10 12:01:04,512 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:04,513 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:04,513 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1662482341, now seen corresponding path program 1 times [2018-09-10 12:01:04,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:04,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:04,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:04,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:04,515 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:04,768 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:01:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:01:05,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:05,197 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:05,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:05,224 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:05,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-09-10 12:01:05,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:01:06,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:01:06,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 12:01:06,216 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:06,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:01:06,218 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:01:06,218 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:06,218 INFO L87 Difference]: Start difference. First operand 60893 states and 88513 transitions. Second operand 5 states. [2018-09-10 12:01:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:25,413 INFO L93 Difference]: Finished difference Result 194384 states and 304984 transitions. [2018-09-10 12:01:25,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:01:25,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-09-10 12:01:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:26,129 INFO L225 Difference]: With dead ends: 194384 [2018-09-10 12:01:26,129 INFO L226 Difference]: Without dead ends: 134301 [2018-09-10 12:01:27,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:01:27,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134301 states. [2018-09-10 12:01:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134301 to 133657. [2018-09-10 12:01:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133657 states. [2018-09-10 12:01:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133657 states to 133657 states and 181148 transitions. [2018-09-10 12:01:30,756 INFO L78 Accepts]: Start accepts. Automaton has 133657 states and 181148 transitions. Word has length 219 [2018-09-10 12:01:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:30,757 INFO L480 AbstractCegarLoop]: Abstraction has 133657 states and 181148 transitions. [2018-09-10 12:01:30,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:01:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 133657 states and 181148 transitions. [2018-09-10 12:01:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-10 12:01:30,776 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:30,776 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:30,776 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:30,777 INFO L82 PathProgramCache]: Analyzing trace with hash 342121447, now seen corresponding path program 1 times [2018-09-10 12:01:30,777 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:30,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:30,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:30,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:30,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 193 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:31,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:31,532 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:31,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:31,542 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:31,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:32,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:32,972 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:01:32,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-09-10 12:01:32,972 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:32,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:01:32,973 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:01:32,973 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:32,974 INFO L87 Difference]: Start difference. First operand 133657 states and 181148 transitions. Second operand 3 states. [2018-09-10 12:01:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:43,378 INFO L93 Difference]: Finished difference Result 324396 states and 465205 transitions. [2018-09-10 12:01:43,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:01:43,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2018-09-10 12:01:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:44,050 INFO L225 Difference]: With dead ends: 324396 [2018-09-10 12:01:44,051 INFO L226 Difference]: Without dead ends: 191549 [2018-09-10 12:01:44,260 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 551 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191549 states. [2018-09-10 12:01:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191549 to 191470. [2018-09-10 12:01:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191470 states. [2018-09-10 12:01:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191470 states to 191470 states and 258801 transitions. [2018-09-10 12:01:48,400 INFO L78 Accepts]: Start accepts. Automaton has 191470 states and 258801 transitions. Word has length 276 [2018-09-10 12:01:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:48,401 INFO L480 AbstractCegarLoop]: Abstraction has 191470 states and 258801 transitions. [2018-09-10 12:01:48,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:01:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 191470 states and 258801 transitions. [2018-09-10 12:01:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-10 12:01:48,431 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:48,431 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:48,431 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1398255630, now seen corresponding path program 1 times [2018-09-10 12:01:48,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:48,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:48,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:48,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:48,433 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-10 12:01:48,759 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:48,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:01:48,759 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:48,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:01:48,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:01:48,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:01:48,760 INFO L87 Difference]: Start difference. First operand 191470 states and 258801 transitions. Second operand 4 states. [2018-09-10 12:02:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:06,043 INFO L93 Difference]: Finished difference Result 409879 states and 582629 transitions. [2018-09-10 12:02:06,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:02:06,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 313 [2018-09-10 12:02:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:08,339 INFO L225 Difference]: With dead ends: 409879 [2018-09-10 12:02:08,339 INFO L226 Difference]: Without dead ends: 219219 [2018-09-10 12:02:08,660 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:02:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219219 states. [2018-09-10 12:02:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219219 to 219132. [2018-09-10 12:02:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219132 states. Received shutdown request... [2018-09-10 12:02:21,904 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:02:21,911 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:02:21,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:02:21 BoogieIcfgContainer [2018-09-10 12:02:21,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:02:21,912 INFO L168 Benchmark]: Toolchain (without parser) took 232611.37 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:21,913 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:02:21,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2906.51 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. [2018-09-10 12:02:21,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.57 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 12:02:21,915 INFO L168 Benchmark]: Boogie Preprocessor took 1281.22 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 12:02:21,916 INFO L168 Benchmark]: RCFGBuilder took 16306.69 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 159.9 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 78.4 MB). Peak memory consumption was 747.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:21,917 INFO L168 Benchmark]: TraceAbstraction took 211831.04 ms. Allocated memory was 2.7 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:21,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2906.51 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 278.57 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 1281.22 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 16306.69 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 159.9 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 78.4 MB). Peak memory consumption was 747.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211831.04 ms. Allocated memory was 2.7 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while ReachableStatesComputation was computing reachable states (171278 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 179.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5683 SDtfs, 26562 SDslu, 4122 SDs, 0 SdLazy, 54522 SolverSat, 11863 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 149.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1064 GetRequests, 1003 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191470occurred in iteration=8, 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, 9 MinimizatonAttempts, 1478 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 2200 NumberOfCodeBlocks, 2200 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2682 ConstructedInterpolants, 0 QuantifiedInterpolants, 1918049 SizeOfPredicates, 4 NumberOfNonLiveVariables, 932 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 1733/1888 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_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-02-21-939.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label49_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-02-21-939.csv Completed graceful shutdown