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/Problem15_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:09:25,075 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:09:25,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:09:25,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:09:25,091 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:09:25,092 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:09:25,093 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:09:25,095 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:09:25,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:09:25,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:09:25,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:09:25,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:09:25,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:09:25,103 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:09:25,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:09:25,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:09:25,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:09:25,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:09:25,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:09:25,124 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:09:25,125 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:09:25,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:09:25,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:09:25,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:09:25,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:09:25,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:09:25,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:09:25,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:09:25,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:09:25,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:09:25,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:09:25,141 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:09:25,141 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:09:25,142 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:09:25,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:09:25,143 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:09:25,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:09:25,173 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:09:25,174 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:09:25,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:09:25,175 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:09:25,175 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:09:25,175 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:09:25,176 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:09:25,176 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:09:25,176 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:09:25,176 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:09:25,177 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:09:25,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:09:25,178 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:09:25,178 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:09:25,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:09:25,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:09:25,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:09:25,179 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:09:25,179 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:09:25,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:09:25,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:09:25,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:09:25,180 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:09:25,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:09:25,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:09:25,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:09:25,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:09:25,182 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:09:25,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:09:25,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:09:25,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:09:25,183 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:09:25,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:09:25,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:09:25,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:09:25,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:09:25,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:09:25,263 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:09:25,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-09-10 12:09:25,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671822c35/6f2b23d597ae4f8abf2257b90c0c7f3b/FLAG7e584e488 [2018-09-10 12:09:26,020 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:09:26,020 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-09-10 12:09:26,046 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671822c35/6f2b23d597ae4f8abf2257b90c0c7f3b/FLAG7e584e488 [2018-09-10 12:09:26,069 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671822c35/6f2b23d597ae4f8abf2257b90c0c7f3b [2018-09-10 12:09:26,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:09:26,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:09:26,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:09:26,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:09:26,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:09:26,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:09:26" (1/1) ... [2018-09-10 12:09:26,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab40953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:26, skipping insertion in model container [2018-09-10 12:09:26,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:09:26" (1/1) ... [2018-09-10 12:09:26,409 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:09:26,989 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:09:27,010 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:09:27,295 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:09:27,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27 WrapperNode [2018-09-10 12:09:27,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:09:27,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:09:27,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:09:27,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:09:27,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:27,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:27,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:09:27,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:09:27,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:09:27,656 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:09:28,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... [2018-09-10 12:09:28,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:09:28,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:09:28,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:09:28,252 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:09:28,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:09:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:09:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:09:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:09:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:09:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:09:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:09:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:09:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:09:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:09:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:09:36,469 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:09:36,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:09:36 BoogieIcfgContainer [2018-09-10 12:09:36,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:09:36,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:09:36,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:09:36,475 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:09:36,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:09:26" (1/3) ... [2018-09-10 12:09:36,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f1098b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:09:36, skipping insertion in model container [2018-09-10 12:09:36,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:27" (2/3) ... [2018-09-10 12:09:36,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f1098b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:09:36, skipping insertion in model container [2018-09-10 12:09:36,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:09:36" (3/3) ... [2018-09-10 12:09:36,479 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17_true-unreach-call.c [2018-09-10 12:09:36,489 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:09:36,498 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:09:36,553 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:09:36,554 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:09:36,554 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:09:36,554 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:09:36,555 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:09:36,555 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:09:36,555 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:09:36,555 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:09:36,555 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:09:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-10 12:09:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-10 12:09:36,602 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:36,603 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, 1, 1, 1, 1, 1] [2018-09-10 12:09:36,605 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:09:36,612 INFO L82 PathProgramCache]: Analyzing trace with hash -267868124, now seen corresponding path program 1 times [2018-09-10 12:09:36,615 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:36,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:36,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:36,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:36,660 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:37,129 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:09:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:37,275 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:09:37,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:09:37,276 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:09:37,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:09:37,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:09:37,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:09:37,305 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-10 12:09:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:09:45,233 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-09-10 12:09:45,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:09:45,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-09-10 12:09:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:09:45,260 INFO L225 Difference]: With dead ends: 1193 [2018-09-10 12:09:45,261 INFO L226 Difference]: Without dead ends: 753 [2018-09-10 12:09:45,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:09:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-09-10 12:09:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-09-10 12:09:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-09-10 12:09:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-09-10 12:09:45,377 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 70 [2018-09-10 12:09:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:09:45,379 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-09-10 12:09:45,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:09:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-09-10 12:09:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-10 12:09:45,389 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:45,390 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, 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] [2018-09-10 12:09:45,390 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:09:45,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2012493804, now seen corresponding path program 1 times [2018-09-10 12:09:45,391 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:45,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:45,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:45,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:45,393 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:45,788 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:09:45,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:09:45,788 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:09:45,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:09:45,791 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:09:45,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:09:45,792 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-09-10 12:10:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:02,140 INFO L93 Difference]: Finished difference Result 2821 states and 5078 transitions. [2018-09-10 12:10:02,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:10:02,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-09-10 12:10:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:02,158 INFO L225 Difference]: With dead ends: 2821 [2018-09-10 12:10:02,158 INFO L226 Difference]: Without dead ends: 2074 [2018-09-10 12:10:02,166 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 12:10:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2018-09-10 12:10:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2049. [2018-09-10 12:10:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2018-09-10 12:10:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3215 transitions. [2018-09-10 12:10:02,251 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3215 transitions. Word has length 150 [2018-09-10 12:10:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:02,251 INFO L480 AbstractCegarLoop]: Abstraction has 2049 states and 3215 transitions. [2018-09-10 12:10:02,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:10:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3215 transitions. [2018-09-10 12:10:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-10 12:10:02,258 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:02,258 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, 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] [2018-09-10 12:10:02,258 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:02,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1029602956, now seen corresponding path program 1 times [2018-09-10 12:10:02,259 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:02,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:02,260 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:02,811 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:02,811 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:10:02,811 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:02,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:10:02,812 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:10:02,814 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:10:02,815 INFO L87 Difference]: Start difference. First operand 2049 states and 3215 transitions. Second operand 6 states. [2018-09-10 12:10:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:12,101 INFO L93 Difference]: Finished difference Result 6106 states and 9721 transitions. [2018-09-10 12:10:12,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 12:10:12,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-09-10 12:10:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:12,131 INFO L225 Difference]: With dead ends: 6106 [2018-09-10 12:10:12,131 INFO L226 Difference]: Without dead ends: 4063 [2018-09-10 12:10:12,142 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:10:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2018-09-10 12:10:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 3984. [2018-09-10 12:10:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3984 states. [2018-09-10 12:10:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5617 transitions. [2018-09-10 12:10:12,264 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5617 transitions. Word has length 154 [2018-09-10 12:10:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:12,264 INFO L480 AbstractCegarLoop]: Abstraction has 3984 states and 5617 transitions. [2018-09-10 12:10:12,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:10:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5617 transitions. [2018-09-10 12:10:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-09-10 12:10:12,274 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:12,274 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, 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] [2018-09-10 12:10:12,275 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1609712302, now seen corresponding path program 1 times [2018-09-10 12:10:12,275 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:12,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:12,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:12,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:12,276 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:12,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:12,663 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 12:10:12,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:12,674 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:12,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:13,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:13,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:13,435 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:10:13,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:13,466 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:13,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:13,810 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:14,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:10:14,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:10:14,026 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:10:14,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:10:14,028 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:10:14,028 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:10:14,028 INFO L87 Difference]: Start difference. First operand 3984 states and 5617 transitions. Second operand 9 states. [2018-09-10 12:10:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:24,332 INFO L93 Difference]: Finished difference Result 12888 states and 19885 transitions. [2018-09-10 12:10:24,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:10:24,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2018-09-10 12:10:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:24,407 INFO L225 Difference]: With dead ends: 12888 [2018-09-10 12:10:24,407 INFO L226 Difference]: Without dead ends: 8910 [2018-09-10 12:10:24,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 924 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:10:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8910 states. [2018-09-10 12:10:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8910 to 8721. [2018-09-10 12:10:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8721 states. [2018-09-10 12:10:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8721 states to 8721 states and 11215 transitions. [2018-09-10 12:10:24,798 INFO L78 Accepts]: Start accepts. Automaton has 8721 states and 11215 transitions. Word has length 231 [2018-09-10 12:10:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:24,799 INFO L480 AbstractCegarLoop]: Abstraction has 8721 states and 11215 transitions. [2018-09-10 12:10:24,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:10:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8721 states and 11215 transitions. [2018-09-10 12:10:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-10 12:10:24,822 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:24,822 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, 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] [2018-09-10 12:10:24,823 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 12:10:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1551667720, now seen corresponding path program 1 times [2018-09-10 12:10:24,823 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:24,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:24,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:24,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:24,824 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:25,123 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:10:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:10:25,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:25,522 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:25,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:25,538 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:25,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 12:10:26,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:10:27,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:27,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:10:27,043 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:27,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:10:27,044 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:10:27,044 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:10:27,046 INFO L87 Difference]: Start difference. First operand 8721 states and 11215 transitions. Second operand 5 states. [2018-09-10 12:10:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:33,578 INFO L93 Difference]: Finished difference Result 20961 states and 27594 transitions. [2018-09-10 12:10:33,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:10:33,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2018-09-10 12:10:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:33,672 INFO L225 Difference]: With dead ends: 20961 [2018-09-10 12:10:33,673 INFO L226 Difference]: Without dead ends: 12246 [2018-09-10 12:10:33,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:10:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12246 states. [2018-09-10 12:10:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12246 to 11820. [2018-09-10 12:10:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11820 states. [2018-09-10 12:10:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11820 states to 11820 states and 14847 transitions. [2018-09-10 12:10:34,058 INFO L78 Accepts]: Start accepts. Automaton has 11820 states and 14847 transitions. Word has length 237 [2018-09-10 12:10:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:34,059 INFO L480 AbstractCegarLoop]: Abstraction has 11820 states and 14847 transitions. [2018-09-10 12:10:34,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:10:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11820 states and 14847 transitions. [2018-09-10 12:10:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-10 12:10:34,105 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:34,106 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:34,106 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 12:10:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash 62899703, now seen corresponding path program 1 times [2018-09-10 12:10:34,107 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:34,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:34,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:34,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:34,108 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 277 proven. 79 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:10:35,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:35,013 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:35,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:35,033 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:35,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:35,544 WARN L175 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2018-09-10 12:10:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-10 12:10:35,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-09-10 12:10:35,849 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:35,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-10 12:10:35,850 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:35,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:10:35,851 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:10:35,851 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:35,851 INFO L87 Difference]: Start difference. First operand 11820 states and 14847 transitions. Second operand 3 states. [2018-09-10 12:10:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:40,838 INFO L93 Difference]: Finished difference Result 26875 states and 35230 transitions. [2018-09-10 12:10:40,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:10:40,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 438 [2018-09-10 12:10:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:40,908 INFO L225 Difference]: With dead ends: 26875 [2018-09-10 12:10:40,908 INFO L226 Difference]: Without dead ends: 15066 [2018-09-10 12:10:40,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15066 states. [2018-09-10 12:10:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15066 to 15047. [2018-09-10 12:10:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15047 states. [2018-09-10 12:10:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15047 states to 15047 states and 19590 transitions. [2018-09-10 12:10:41,330 INFO L78 Accepts]: Start accepts. Automaton has 15047 states and 19590 transitions. Word has length 438 [2018-09-10 12:10:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:41,331 INFO L480 AbstractCegarLoop]: Abstraction has 15047 states and 19590 transitions. [2018-09-10 12:10:41,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:10:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 15047 states and 19590 transitions. [2018-09-10 12:10:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-09-10 12:10:41,386 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:41,386 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:10:41,386 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 12:10:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1739830887, now seen corresponding path program 1 times [2018-09-10 12:10:41,387 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:41,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:41,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:41,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:41,388 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:42,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:42,268 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:42,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:42,285 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:42,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 12:10:42,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:43,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:43,460 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:10:43,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:43,476 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:43,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 12:10:44,000 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:44,194 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:10:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:44,862 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:10:44,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:10:44,862 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:10:44,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:10:44,864 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:10:44,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:10:44,865 INFO L87 Difference]: Start difference. First operand 15047 states and 19590 transitions. Second operand 9 states. [2018-09-10 12:10:55,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:55,125 INFO L93 Difference]: Finished difference Result 35538 states and 54608 transitions. [2018-09-10 12:10:55,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 12:10:55,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 441 [2018-09-10 12:10:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:55,270 INFO L225 Difference]: With dead ends: 35538 [2018-09-10 12:10:55,270 INFO L226 Difference]: Without dead ends: 20502 [2018-09-10 12:10:55,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1766 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:10:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20502 states. [2018-09-10 12:10:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20502 to 20428. [2018-09-10 12:10:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20428 states. [2018-09-10 12:10:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20428 states to 20428 states and 29342 transitions. [2018-09-10 12:10:56,329 INFO L78 Accepts]: Start accepts. Automaton has 20428 states and 29342 transitions. Word has length 441 [2018-09-10 12:10:56,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:56,330 INFO L480 AbstractCegarLoop]: Abstraction has 20428 states and 29342 transitions. [2018-09-10 12:10:56,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:10:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20428 states and 29342 transitions. [2018-09-10 12:10:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-09-10 12:10:56,365 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:56,365 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:10:56,365 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 12:10:56,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1908984949, now seen corresponding path program 1 times [2018-09-10 12:10:56,366 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:56,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:56,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:56,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:56,368 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:57,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:57,181 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:57,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:57,196 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:57,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:57,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:58,304 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:58,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 12:10:58,305 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:58,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:10:58,306 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:10:58,306 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:58,306 INFO L87 Difference]: Start difference. First operand 20428 states and 29342 transitions. Second operand 4 states. [2018-09-10 12:11:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:03,875 INFO L93 Difference]: Finished difference Result 59187 states and 98962 transitions. [2018-09-10 12:11:03,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:11:03,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 440 [2018-09-10 12:11:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:04,222 INFO L225 Difference]: With dead ends: 59187 [2018-09-10 12:11:04,222 INFO L226 Difference]: Without dead ends: 38770 [2018-09-10 12:11:04,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:11:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38770 states. [2018-09-10 12:11:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38770 to 38763. [2018-09-10 12:11:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38763 states. [2018-09-10 12:11:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38763 states to 38763 states and 57550 transitions. [2018-09-10 12:11:05,778 INFO L78 Accepts]: Start accepts. Automaton has 38763 states and 57550 transitions. Word has length 440 [2018-09-10 12:11:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:05,779 INFO L480 AbstractCegarLoop]: Abstraction has 38763 states and 57550 transitions. [2018-09-10 12:11:05,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:11:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 38763 states and 57550 transitions. [2018-09-10 12:11:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-09-10 12:11:05,812 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:05,812 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:11:05,813 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 12:11:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1655698539, now seen corresponding path program 1 times [2018-09-10 12:11:05,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:05,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:05,814 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-10 12:11:06,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:11:06,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:11:06,509 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:06,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:11:06,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:11:06,510 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:11:06,510 INFO L87 Difference]: Start difference. First operand 38763 states and 57550 transitions. Second operand 3 states. [2018-09-10 12:11:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:10,639 INFO L93 Difference]: Finished difference Result 77834 states and 115835 transitions. [2018-09-10 12:11:10,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:11:10,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 512 [2018-09-10 12:11:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:10,958 INFO L225 Difference]: With dead ends: 77834 [2018-09-10 12:11:10,958 INFO L226 Difference]: Without dead ends: 39082 [2018-09-10 12:11:11,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:11:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39082 states. [2018-09-10 12:11:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39082 to 38749. [2018-09-10 12:11:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38749 states. [2018-09-10 12:11:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38749 states to 38749 states and 57366 transitions. [2018-09-10 12:11:13,189 INFO L78 Accepts]: Start accepts. Automaton has 38749 states and 57366 transitions. Word has length 512 [2018-09-10 12:11:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:13,190 INFO L480 AbstractCegarLoop]: Abstraction has 38749 states and 57366 transitions. [2018-09-10 12:11:13,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:11:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38749 states and 57366 transitions. [2018-09-10 12:11:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-09-10 12:11:13,236 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:13,236 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:11:13,237 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash -487343287, now seen corresponding path program 1 times [2018-09-10 12:11:13,237 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:13,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:13,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:13,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:13,238 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 191 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-10 12:11:13,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:13,824 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:13,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:13,835 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:14,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-10 12:11:14,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 189 proven. 199 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:11:16,249 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:11:16,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-10 12:11:16,250 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:16,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:11:16,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:11:16,251 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:11:16,251 INFO L87 Difference]: Start difference. First operand 38749 states and 57366 transitions. Second operand 5 states. [2018-09-10 12:11:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:29,871 INFO L93 Difference]: Finished difference Result 84161 states and 119212 transitions. [2018-09-10 12:11:29,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:11:29,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 533 [2018-09-10 12:11:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:30,068 INFO L225 Difference]: With dead ends: 84161 [2018-09-10 12:11:30,069 INFO L226 Difference]: Without dead ends: 45423 [2018-09-10 12:11:30,370 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1063 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:11:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45423 states. [2018-09-10 12:11:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45423 to 44225. [2018-09-10 12:11:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44225 states. [2018-09-10 12:11:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44225 states to 44225 states and 56642 transitions. [2018-09-10 12:11:32,066 INFO L78 Accepts]: Start accepts. Automaton has 44225 states and 56642 transitions. Word has length 533 [2018-09-10 12:11:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:32,067 INFO L480 AbstractCegarLoop]: Abstraction has 44225 states and 56642 transitions. [2018-09-10 12:11:32,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:11:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 44225 states and 56642 transitions. [2018-09-10 12:11:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-09-10 12:11:32,084 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:32,084 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:11:32,084 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash -149438579, now seen corresponding path program 1 times [2018-09-10 12:11:32,085 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:32,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:32,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:32,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:32,086 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:32,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:32,874 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:32,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:32,884 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:33,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 12:11:33,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:33,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:33,820 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:33,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:33,837 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:34,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 12:11:34,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:35,443 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:35,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:11:35,443 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:35,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:11:35,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:11:35,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:11:35,445 INFO L87 Difference]: Start difference. First operand 44225 states and 56642 transitions. Second operand 9 states. [2018-09-10 12:11:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:44,278 INFO L93 Difference]: Finished difference Result 88529 states and 116735 transitions. [2018-09-10 12:11:44,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:11:44,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 568 [2018-09-10 12:11:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:44,485 INFO L225 Difference]: With dead ends: 88529 [2018-09-10 12:11:44,485 INFO L226 Difference]: Without dead ends: 44620 [2018-09-10 12:11:44,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2302 GetRequests, 2276 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:11:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44620 states. [2018-09-10 12:11:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44620 to 42981. [2018-09-10 12:11:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42981 states. [2018-09-10 12:11:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42981 states to 42981 states and 53159 transitions. [2018-09-10 12:11:46,383 INFO L78 Accepts]: Start accepts. Automaton has 42981 states and 53159 transitions. Word has length 568 [2018-09-10 12:11:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:46,384 INFO L480 AbstractCegarLoop]: Abstraction has 42981 states and 53159 transitions. [2018-09-10 12:11:46,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:11:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 42981 states and 53159 transitions. [2018-09-10 12:11:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-09-10 12:11:46,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:46,401 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:46,402 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1414758175, now seen corresponding path program 1 times [2018-09-10 12:11:46,402 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:46,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:46,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:46,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:46,403 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:46,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:46,960 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:46,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:46,970 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:47,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:47,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:47,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:47,764 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:47,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:47,779 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:48,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:48,867 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:49,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:49,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-10 12:11:49,121 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:49,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:11:49,122 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:11:49,123 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:11:49,123 INFO L87 Difference]: Start difference. First operand 42981 states and 53159 transitions. Second operand 6 states. [2018-09-10 12:11:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:57,279 INFO L93 Difference]: Finished difference Result 95673 states and 124217 transitions. [2018-09-10 12:11:57,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 12:11:57,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 611 [2018-09-10 12:11:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:57,491 INFO L225 Difference]: With dead ends: 95673 [2018-09-10 12:11:57,491 INFO L226 Difference]: Without dead ends: 53008 [2018-09-10 12:11:57,653 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2455 GetRequests, 2442 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:11:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53008 states. [2018-09-10 12:11:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53008 to 51963. [2018-09-10 12:11:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51963 states. [2018-09-10 12:11:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51963 states to 51963 states and 61795 transitions. [2018-09-10 12:11:59,187 INFO L78 Accepts]: Start accepts. Automaton has 51963 states and 61795 transitions. Word has length 611 [2018-09-10 12:11:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:59,188 INFO L480 AbstractCegarLoop]: Abstraction has 51963 states and 61795 transitions. [2018-09-10 12:11:59,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:11:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 51963 states and 61795 transitions. [2018-09-10 12:11:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-09-10 12:11:59,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:59,211 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:59,211 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash 151364192, now seen corresponding path program 1 times [2018-09-10 12:11:59,212 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:59,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:59,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:59,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:59,213 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 356 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:12:00,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:00,846 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:12:00,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:00,854 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:01,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 568 proven. 41 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-10 12:12:02,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:02,650 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-10 12:12:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 267 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:12:03,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:03,606 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:12:03,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:03,624 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:04,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 518 proven. 41 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-09-10 12:12:05,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 267 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:12:06,195 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:12:06,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-10 12:12:06,195 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:12:06,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 12:12:06,197 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 12:12:06,198 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-09-10 12:12:06,198 INFO L87 Difference]: Start difference. First operand 51963 states and 61795 transitions. Second operand 13 states. [2018-09-10 12:12:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:12:24,676 INFO L93 Difference]: Finished difference Result 112150 states and 133639 transitions. [2018-09-10 12:12:24,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-10 12:12:24,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 629 [2018-09-10 12:12:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:12:24,865 INFO L225 Difference]: With dead ends: 112150 [2018-09-10 12:12:24,866 INFO L226 Difference]: Without dead ends: 57950 [2018-09-10 12:12:25,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2571 GetRequests, 2525 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2018-09-10 12:12:25,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57950 states. [2018-09-10 12:12:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57950 to 55525. [2018-09-10 12:12:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55525 states. [2018-09-10 12:12:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55525 states to 55525 states and 65443 transitions. [2018-09-10 12:12:26,309 INFO L78 Accepts]: Start accepts. Automaton has 55525 states and 65443 transitions. Word has length 629 [2018-09-10 12:12:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:12:26,309 INFO L480 AbstractCegarLoop]: Abstraction has 55525 states and 65443 transitions. [2018-09-10 12:12:26,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-10 12:12:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 55525 states and 65443 transitions. [2018-09-10 12:12:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-09-10 12:12:26,341 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:12:26,342 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:26,342 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:12:26,343 INFO L82 PathProgramCache]: Analyzing trace with hash 630255155, now seen corresponding path program 1 times [2018-09-10 12:12:26,343 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:12:26,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:26,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:26,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:26,344 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:12:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 376 proven. 346 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-10 12:12:27,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:27,264 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:12:27,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:27,272 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:27,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:27,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:28,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:28,471 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:12:28,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:28,489 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:29,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:29,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:29,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:12:29,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 13 [2018-09-10 12:12:29,469 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:12:29,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 12:12:29,471 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 12:12:29,471 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:12:29,472 INFO L87 Difference]: Start difference. First operand 55525 states and 65443 transitions. Second operand 12 states. [2018-09-10 12:13:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:00,134 INFO L93 Difference]: Finished difference Result 177633 states and 217464 transitions. [2018-09-10 12:13:00,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-10 12:13:00,134 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 668 [2018-09-10 12:13:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:00,580 INFO L225 Difference]: With dead ends: 177633 [2018-09-10 12:13:00,580 INFO L226 Difference]: Without dead ends: 122424 [2018-09-10 12:13:00,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2776 GetRequests, 2706 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=725, Invalid=3181, Unknown=0, NotChecked=0, Total=3906 [2018-09-10 12:13:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122424 states. [2018-09-10 12:13:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122424 to 121355. [2018-09-10 12:13:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121355 states. [2018-09-10 12:13:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121355 states to 121355 states and 144393 transitions. [2018-09-10 12:13:03,072 INFO L78 Accepts]: Start accepts. Automaton has 121355 states and 144393 transitions. Word has length 668 [2018-09-10 12:13:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:13:03,073 INFO L480 AbstractCegarLoop]: Abstraction has 121355 states and 144393 transitions. [2018-09-10 12:13:03,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 12:13:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 121355 states and 144393 transitions. [2018-09-10 12:13:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-09-10 12:13:03,100 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:13:03,101 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:13:03,102 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:13:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 837215191, now seen corresponding path program 1 times [2018-09-10 12:13:03,102 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:13:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:03,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:03,103 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:13:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-09-10 12:13:04,509 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:13:04,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:13:04,509 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:13:04,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:13:04,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:13:04,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:13:04,511 INFO L87 Difference]: Start difference. First operand 121355 states and 144393 transitions. Second operand 5 states. [2018-09-10 12:13:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:14,694 INFO L93 Difference]: Finished difference Result 311662 states and 375483 transitions. [2018-09-10 12:13:14,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 12:13:14,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 710 [2018-09-10 12:13:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:15,439 INFO L225 Difference]: With dead ends: 311662 [2018-09-10 12:13:15,439 INFO L226 Difference]: Without dead ends: 190313 [2018-09-10 12:13:15,955 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:13:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190313 states. Received shutdown request... [2018-09-10 12:13:16,666 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:13:16,670 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:13:16,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:13:16 BoogieIcfgContainer [2018-09-10 12:13:16,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:13:16,672 INFO L168 Benchmark]: Toolchain (without parser) took 230588.72 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 934.5 MB in the end (delta: 471.6 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,673 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:13:16,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1348.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,675 INFO L168 Benchmark]: Boogie Preprocessor took 596.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,676 INFO L168 Benchmark]: RCFGBuilder took 8218.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 317.2 MB). Peak memory consumption was 317.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,676 INFO L168 Benchmark]: TraceAbstraction took 220199.91 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 934.5 MB in the end (delta: 1.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 12:13:16,681 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1348.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 596.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8218.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 317.2 MB). Peak memory consumption was 317.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220199.91 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 934.5 MB in the end (delta: 1.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 220.1s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 171.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2839 SDtfs, 30929 SDslu, 4533 SDs, 0 SdLazy, 56367 SolverSat, 10684 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 135.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16205 GetRequests, 15944 SyntacticMatches, 33 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121355occurred in iteration=14, 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: 14.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 8528 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 14336 NumberOfCodeBlocks, 14336 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 22233 ConstructedInterpolants, 0 QuantifiedInterpolants, 44937071 SizeOfPredicates, 28 NumberOfNonLiveVariables, 11551 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 47 InterpolantComputations, 9 PerfectInterpolantSequences, 20370/23301 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/Problem15_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-13-16-705.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-13-16-705.csv Completed graceful shutdown