java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:53:51,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:53:51,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:53:51,186 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:53:51,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:53:51,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:53:51,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:53:51,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:53:51,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:53:51,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:53:51,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:53:51,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:53:51,195 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:53:51,196 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:53:51,197 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:53:51,198 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:53:51,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:53:51,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:53:51,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:53:51,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:53:51,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:53:51,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:53:51,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:53:51,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:53:51,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:53:51,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:53:51,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:53:51,213 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:53:51,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:53:51,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:53:51,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:53:51,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:53:51,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:53:51,217 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:53:51,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:53:51,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:53:51,219 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:53:51,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:53:51,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:53:51,235 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:53:51,236 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:53:51,236 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:53:51,236 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:53:51,236 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:53:51,236 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:53:51,237 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:53:51,237 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:53:51,237 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:53:51,238 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:53:51,238 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:53:51,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:53:51,238 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:53:51,238 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:53:51,239 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:53:51,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:53:51,239 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:53:51,239 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:53:51,239 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:53:51,240 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:53:51,240 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:53:51,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:53:51,240 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:53:51,241 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:53:51,241 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:53:51,241 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:53:51,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:53:51,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:53:51,242 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:53:51,242 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:53:51,242 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:53:51,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:53:51,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:53:51,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:53:51,312 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:53:51,313 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:53:51,313 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-07-24 14:53:51,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67c75bc8/fe8b18efb5c24dc5a7696d7e1eb2cae3/FLAG86055b78b [2018-07-24 14:53:52,097 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:53:52,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label42_true-unreach-call.c [2018-07-24 14:53:52,126 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67c75bc8/fe8b18efb5c24dc5a7696d7e1eb2cae3/FLAG86055b78b [2018-07-24 14:53:52,142 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67c75bc8/fe8b18efb5c24dc5a7696d7e1eb2cae3 [2018-07-24 14:53:52,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:53:52,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:53:52,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:53:52,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:53:52,166 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:53:52,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:53:52" (1/1) ... [2018-07-24 14:53:52,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d77156e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:52, skipping insertion in model container [2018-07-24 14:53:52,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:53:52" (1/1) ... [2018-07-24 14:53:52,477 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:53:53,225 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:53:53,244 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:53:53,770 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:53:53,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53 WrapperNode [2018-07-24 14:53:53,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:53:53,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:53:53,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:53:53,973 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:53:53,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:54,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:54,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:53:54,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:53:54,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:53:54,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:53:54,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:54,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:54,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:54,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:55,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:55,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:55,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... [2018-07-24 14:53:55,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:53:55,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:53:55,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:53:55,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:53:55,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:53:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:53:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:53:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:53:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:53:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:53:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:53:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:53:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:53:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:53:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:54:05,600 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:54:05,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:54:05 BoogieIcfgContainer [2018-07-24 14:54:05,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:54:05,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:54:05,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:54:05,613 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:54:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:53:52" (1/3) ... [2018-07-24 14:54:05,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b16d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:54:05, skipping insertion in model container [2018-07-24 14:54:05,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:53:53" (2/3) ... [2018-07-24 14:54:05,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458b16d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:54:05, skipping insertion in model container [2018-07-24 14:54:05,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:54:05" (3/3) ... [2018-07-24 14:54:05,624 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label42_true-unreach-call.c [2018-07-24 14:54:05,637 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:54:05,653 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:54:05,727 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:54:05,728 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:54:05,728 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:54:05,728 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:54:05,728 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:54:05,729 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:54:05,729 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:54:05,729 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:54:05,729 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:54:05,767 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 14:54:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-24 14:54:05,776 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:05,778 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:05,778 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash -148669743, now seen corresponding path program 1 times [2018-07-24 14:54:05,787 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:05,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:05,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:05,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:06,253 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 14:54:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:06,282 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:54:06,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:54:06,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:06,289 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:54:06,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:54:06,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:54:06,309 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 14:54:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:17,489 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-07-24 14:54:17,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:54:17,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-07-24 14:54:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:17,523 INFO L225 Difference]: With dead ends: 2125 [2018-07-24 14:54:17,523 INFO L226 Difference]: Without dead ends: 1515 [2018-07-24 14:54:17,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:54:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-07-24 14:54:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-07-24 14:54:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-07-24 14:54:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-07-24 14:54:17,678 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 47 [2018-07-24 14:54:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:17,678 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-07-24 14:54:17,679 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:54:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-07-24 14:54:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 14:54:17,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:17,690 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:17,691 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash -788659486, now seen corresponding path program 1 times [2018-07-24 14:54:17,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:17,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:17,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:17,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:17,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:17,966 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:54:17,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:54:17,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:17,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:54:17,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:54:17,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:54:17,969 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-07-24 14:54:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:29,128 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-07-24 14:54:29,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:54:29,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-07-24 14:54:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:29,144 INFO L225 Difference]: With dead ends: 3017 [2018-07-24 14:54:29,144 INFO L226 Difference]: Without dead ends: 1980 [2018-07-24 14:54:29,149 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:54:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-07-24 14:54:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-07-24 14:54:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-07-24 14:54:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-07-24 14:54:29,235 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 119 [2018-07-24 14:54:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:29,237 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-07-24 14:54:29,237 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:54:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-07-24 14:54:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 14:54:29,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:29,246 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:29,246 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash 175900161, now seen corresponding path program 1 times [2018-07-24 14:54:29,247 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:29,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:29,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:29,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:29,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:29,712 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:29,712 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:54:29,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:29,733 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:54:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:29,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:36,547 WARN L169 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 42 [2018-07-24 14:54:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:36,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:37,010 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-24 14:54:38,055 WARN L169 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-07-24 14:54:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:38,531 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:54:38,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 14:54:38,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:38,532 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:54:38,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:54:38,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:54:38,533 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 6 states. [2018-07-24 14:55:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:24,896 INFO L93 Difference]: Finished difference Result 7506 states and 11496 transitions. [2018-07-24 14:55:24,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:55:24,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-24 14:55:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:24,935 INFO L225 Difference]: With dead ends: 7506 [2018-07-24 14:55:24,935 INFO L226 Difference]: Without dead ends: 5558 [2018-07-24 14:55:24,951 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:55:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2018-07-24 14:55:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5548. [2018-07-24 14:55:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2018-07-24 14:55:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 8157 transitions. [2018-07-24 14:55:25,111 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 8157 transitions. Word has length 122 [2018-07-24 14:55:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:25,112 INFO L471 AbstractCegarLoop]: Abstraction has 5548 states and 8157 transitions. [2018-07-24 14:55:25,112 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:55:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 8157 transitions. [2018-07-24 14:55:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-24 14:55:25,116 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:25,116 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:55:25,117 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -191203214, now seen corresponding path program 1 times [2018-07-24 14:55:25,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:25,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:25,118 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:25,384 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:55:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:25,463 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:55:25,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:55:25,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:55:25,464 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:55:25,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:55:25,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:55:25,465 INFO L87 Difference]: Start difference. First operand 5548 states and 8157 transitions. Second operand 6 states. [2018-07-24 14:55:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:33,630 INFO L93 Difference]: Finished difference Result 13850 states and 21030 transitions. [2018-07-24 14:55:33,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:55:33,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-07-24 14:55:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:33,682 INFO L225 Difference]: With dead ends: 13850 [2018-07-24 14:55:33,682 INFO L226 Difference]: Without dead ends: 8308 [2018-07-24 14:55:33,712 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:55:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8308 states. [2018-07-24 14:55:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8308 to 8243. [2018-07-24 14:55:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8243 states. [2018-07-24 14:55:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 11045 transitions. [2018-07-24 14:55:33,960 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 11045 transitions. Word has length 127 [2018-07-24 14:55:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:33,961 INFO L471 AbstractCegarLoop]: Abstraction has 8243 states and 11045 transitions. [2018-07-24 14:55:33,961 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:55:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 11045 transitions. [2018-07-24 14:55:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-24 14:55:33,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:33,964 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:55:33,965 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash -241245822, now seen corresponding path program 1 times [2018-07-24 14:55:33,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:33,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:33,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:34,238 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:55:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:34,509 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:55:34,509 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:55:34,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:34,519 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:34,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:34,664 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:34,804 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:55:34,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 14:55:34,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:55:34,805 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:55:34,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:55:34,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:55:34,806 INFO L87 Difference]: Start difference. First operand 8243 states and 11045 transitions. Second operand 3 states. [2018-07-24 14:55:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:40,928 INFO L93 Difference]: Finished difference Result 16480 states and 22119 transitions. [2018-07-24 14:55:40,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:55:40,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2018-07-24 14:55:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:40,964 INFO L225 Difference]: With dead ends: 16480 [2018-07-24 14:55:40,964 INFO L226 Difference]: Without dead ends: 8243 [2018-07-24 14:55:41,011 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:55:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2018-07-24 14:55:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 8243. [2018-07-24 14:55:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8243 states. [2018-07-24 14:55:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 10472 transitions. [2018-07-24 14:55:41,190 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 10472 transitions. Word has length 135 [2018-07-24 14:55:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:41,190 INFO L471 AbstractCegarLoop]: Abstraction has 8243 states and 10472 transitions. [2018-07-24 14:55:41,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:55:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 10472 transitions. [2018-07-24 14:55:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-24 14:55:41,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:41,195 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:55:41,195 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1237625563, now seen corresponding path program 1 times [2018-07-24 14:55:41,196 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:41,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:41,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:41,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:41,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:55:41,474 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:55:41,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:55:41,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:55:41,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:55:41,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:55:41,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:55:41,475 INFO L87 Difference]: Start difference. First operand 8243 states and 10472 transitions. Second operand 3 states. [2018-07-24 14:55:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:46,460 INFO L93 Difference]: Finished difference Result 20882 states and 26903 transitions. [2018-07-24 14:55:46,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:55:46,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-07-24 14:55:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:46,519 INFO L225 Difference]: With dead ends: 20882 [2018-07-24 14:55:46,520 INFO L226 Difference]: Without dead ends: 12645 [2018-07-24 14:55:46,537 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:55:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12645 states. [2018-07-24 14:55:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12645 to 12640. [2018-07-24 14:55:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12640 states. [2018-07-24 14:55:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 15386 transitions. [2018-07-24 14:55:46,781 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 15386 transitions. Word has length 211 [2018-07-24 14:55:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:46,781 INFO L471 AbstractCegarLoop]: Abstraction has 12640 states and 15386 transitions. [2018-07-24 14:55:46,781 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:55:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 15386 transitions. [2018-07-24 14:55:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-24 14:55:46,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:46,793 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:55:46,794 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:46,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2053304205, now seen corresponding path program 1 times [2018-07-24 14:55:46,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:46,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:46,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:46,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:46,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 80 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-24 14:55:47,364 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:55:47,364 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:55:47,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:47,372 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:47,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:47,811 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-07-24 14:55:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:55:47,965 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:48,630 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:55:48,630 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:55:48,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:48,649 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:48,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:55:49,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:55:49,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:55:49,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 17 [2018-07-24 14:55:49,903 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:55:49,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 14:55:49,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 14:55:49,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:55:49,905 INFO L87 Difference]: Start difference. First operand 12640 states and 15386 transitions. Second operand 11 states. [2018-07-24 14:56:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:56:31,337 INFO L93 Difference]: Finished difference Result 49284 states and 63201 transitions. [2018-07-24 14:56:31,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:56:31,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 224 [2018-07-24 14:56:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:56:31,513 INFO L225 Difference]: With dead ends: 49284 [2018-07-24 14:56:31,513 INFO L226 Difference]: Without dead ends: 36650 [2018-07-24 14:56:31,563 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 884 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2018-07-24 14:56:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36650 states. [2018-07-24 14:56:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36650 to 32876. [2018-07-24 14:56:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32876 states. [2018-07-24 14:56:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32876 states to 32876 states and 40473 transitions. [2018-07-24 14:56:32,349 INFO L78 Accepts]: Start accepts. Automaton has 32876 states and 40473 transitions. Word has length 224 [2018-07-24 14:56:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:56:32,350 INFO L471 AbstractCegarLoop]: Abstraction has 32876 states and 40473 transitions. [2018-07-24 14:56:32,350 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 14:56:32,354 INFO L276 IsEmpty]: Start isEmpty. Operand 32876 states and 40473 transitions. [2018-07-24 14:56:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-24 14:56:32,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:56:32,367 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:56:32,367 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:56:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -531476080, now seen corresponding path program 1 times [2018-07-24 14:56:32,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:56:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:32,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:32,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:56:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 14:56:32,684 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:56:32,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:56:32,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:56:32,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:56:32,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:56:32,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:56:32,686 INFO L87 Difference]: Start difference. First operand 32876 states and 40473 transitions. Second operand 3 states. [2018-07-24 14:56:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:56:41,338 INFO L93 Difference]: Finished difference Result 85672 states and 108345 transitions. [2018-07-24 14:56:41,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:56:41,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 321 [2018-07-24 14:56:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:56:41,527 INFO L225 Difference]: With dead ends: 85672 [2018-07-24 14:56:41,527 INFO L226 Difference]: Without dead ends: 52807 [2018-07-24 14:56:41,636 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:56:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52807 states. [2018-07-24 14:56:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52807 to 52777. [2018-07-24 14:56:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52777 states. [2018-07-24 14:56:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52777 states to 52777 states and 66460 transitions. [2018-07-24 14:56:42,735 INFO L78 Accepts]: Start accepts. Automaton has 52777 states and 66460 transitions. Word has length 321 [2018-07-24 14:56:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:56:42,736 INFO L471 AbstractCegarLoop]: Abstraction has 52777 states and 66460 transitions. [2018-07-24 14:56:42,736 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:56:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 52777 states and 66460 transitions. [2018-07-24 14:56:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-07-24 14:56:42,798 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:56:42,799 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:56:42,799 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:56:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 345282050, now seen corresponding path program 1 times [2018-07-24 14:56:42,800 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:56:42,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:42,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:42,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:42,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:56:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:43,463 WARN L169 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 14:56:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 175 proven. 399 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 14:56:44,192 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:56:44,192 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:56:44,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:44,200 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:56:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:44,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:56:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 392 proven. 38 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-07-24 14:56:44,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:56:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-07-24 14:56:45,254 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:56:45,255 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:56:45,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:45,270 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:56:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:45,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:56:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 392 proven. 38 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-07-24 14:56:46,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:56:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-07-24 14:56:46,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:56:46,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6, 6, 6] total 20 [2018-07-24 14:56:46,822 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:56:46,823 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:56:46,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:56:46,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:56:46,825 INFO L87 Difference]: Start difference. First operand 52777 states and 66460 transitions. Second operand 16 states. [2018-07-24 14:57:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:29,106 INFO L93 Difference]: Finished difference Result 213828 states and 272845 transitions. [2018-07-24 14:57:29,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-24 14:57:29,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 497 [2018-07-24 14:57:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:29,595 INFO L225 Difference]: With dead ends: 213828 [2018-07-24 14:57:29,595 INFO L226 Difference]: Without dead ends: 136186 [2018-07-24 14:57:29,891 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2209 GetRequests, 2065 SyntacticMatches, 8 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7583 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2990, Invalid=15916, Unknown=0, NotChecked=0, Total=18906 [2018-07-24 14:57:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136186 states. [2018-07-24 14:57:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136186 to 124162. [2018-07-24 14:57:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124162 states. [2018-07-24 14:57:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124162 states to 124162 states and 144388 transitions. [2018-07-24 14:57:33,104 INFO L78 Accepts]: Start accepts. Automaton has 124162 states and 144388 transitions. Word has length 497 [2018-07-24 14:57:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:33,105 INFO L471 AbstractCegarLoop]: Abstraction has 124162 states and 144388 transitions. [2018-07-24 14:57:33,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:57:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 124162 states and 144388 transitions. [2018-07-24 14:57:33,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-07-24 14:57:33,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:33,163 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:33,163 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:33,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2102615113, now seen corresponding path program 1 times [2018-07-24 14:57:33,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:33,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:33,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:33,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:33,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 14:57:33,599 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:57:33,599 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:57:33,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:33,610 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:57:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:33,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:57:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 14:57:33,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:57:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 14:57:34,354 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:57:34,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-07-24 14:57:34,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:34,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:57:34,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:57:34,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:57:34,357 INFO L87 Difference]: Start difference. First operand 124162 states and 144388 transitions. Second operand 3 states. [2018-07-24 14:57:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:44,394 INFO L93 Difference]: Finished difference Result 300221 states and 354630 transitions. [2018-07-24 14:57:44,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:57:44,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 500 [2018-07-24 14:57:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:44,846 INFO L225 Difference]: With dead ends: 300221 [2018-07-24 14:57:44,847 INFO L226 Difference]: Without dead ends: 145265 [2018-07-24 14:57:45,124 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:57:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145265 states. [2018-07-24 14:57:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145265 to 140490. [2018-07-24 14:57:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140490 states. [2018-07-24 14:57:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140490 states to 140490 states and 163068 transitions. [2018-07-24 14:57:47,467 INFO L78 Accepts]: Start accepts. Automaton has 140490 states and 163068 transitions. Word has length 500 [2018-07-24 14:57:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:47,468 INFO L471 AbstractCegarLoop]: Abstraction has 140490 states and 163068 transitions. [2018-07-24 14:57:47,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:57:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 140490 states and 163068 transitions. [2018-07-24 14:57:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-07-24 14:57:47,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:47,530 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:57:47,530 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -891451245, now seen corresponding path program 1 times [2018-07-24 14:57:47,530 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:47,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:47,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:47,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:47,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2018-07-24 14:57:49,202 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:49,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:57:49,202 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:49,203 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:57:49,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:57:49,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:57:49,203 INFO L87 Difference]: Start difference. First operand 140490 states and 163068 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 14:57:51,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 14:57:51,170 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:57:51,180 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:57:51,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:57:51 BoogieIcfgContainer [2018-07-24 14:57:51,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:57:51,182 INFO L168 Benchmark]: Toolchain (without parser) took 239026.63 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,188 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:57:51,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1814.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 284.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,195 INFO L168 Benchmark]: Boogie Preprocessor took 894.07 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 963.1 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,196 INFO L168 Benchmark]: RCFGBuilder took 10448.83 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 495.6 MB). Peak memory consumption was 495.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,202 INFO L168 Benchmark]: TraceAbstraction took 225578.77 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -767.0 MB). Peak memory consumption was 559.4 MB. Max. memory is 7.1 GB. [2018-07-24 14:57:51,209 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1814.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 284.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 894.07 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 963.1 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10448.83 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 495.6 MB). Peak memory consumption was 495.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225578.77 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -767.0 MB). Peak memory consumption was 559.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 128). Cancelled while BasicCegarLoop was constructing difference of abstraction (140490states) and interpolant automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (350 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 225.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 194.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4056 SDtfs, 35712 SDslu, 3557 SDs, 0 SdLazy, 39119 SolverSat, 14688 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 167.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4694 GetRequests, 4475 SyntacticMatches, 22 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7833 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140490occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 21181 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 5085 NumberOfCodeBlocks, 5085 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7259 ConstructedInterpolants, 266 QuantifiedInterpolants, 8143911 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3671 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 6133/6948 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/Problem17_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-57-51-234.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-57-51-234.csv Completed graceful shutdown