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/Problem11_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:46:50,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:46:50,053 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:46:50,072 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:46:50,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:46:50,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:46:50,075 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:46:50,077 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:46:50,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:46:50,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:46:50,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:46:50,090 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:46:50,090 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:46:50,093 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:46:50,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:46:50,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:46:50,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:46:50,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:46:50,105 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:46:50,107 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:46:50,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:46:50,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:46:50,111 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:46:50,111 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:46:50,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:46:50,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:46:50,115 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:46:50,115 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:46:50,116 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:46:50,119 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:46:50,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:46:50,121 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:46:50,121 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:46:50,122 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:46:50,123 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:46:50,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:46:50,125 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 11:46:50,158 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:46:50,158 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:46:50,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:46:50,160 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:46:50,160 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:46:50,160 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:46:50,160 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:46:50,160 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:46:50,161 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:46:50,161 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:46:50,161 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:46:50,165 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:46:50,165 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:46:50,165 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:46:50,166 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:46:50,166 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:46:50,166 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:46:50,166 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:46:50,166 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:46:50,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:46:50,167 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:46:50,167 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:46:50,167 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:46:50,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:46:50,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:46:50,170 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:46:50,170 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:46:50,170 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:46:50,170 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:46:50,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:46:50,171 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:46:50,171 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:46:50,171 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:46:50,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:46:50,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:46:50,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:46:50,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:46:50,264 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:46:50,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-07-24 11:46:50,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbe36cfb/84d8f4c42f864e3ca602e76de464d695/FLAG01826063e [2018-07-24 11:46:50,929 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:46:50,930 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-07-24 11:46:50,959 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbe36cfb/84d8f4c42f864e3ca602e76de464d695/FLAG01826063e [2018-07-24 11:46:50,980 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbe36cfb/84d8f4c42f864e3ca602e76de464d695 [2018-07-24 11:46:50,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:46:50,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:46:50,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:46:50,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:46:51,006 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:46:51,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:46:50" (1/1) ... [2018-07-24 11:46:51,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c24c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51, skipping insertion in model container [2018-07-24 11:46:51,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:46:50" (1/1) ... [2018-07-24 11:46:51,265 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:46:51,679 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:46:51,702 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:46:51,891 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:46:51,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51 WrapperNode [2018-07-24 11:46:51,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:46:51,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:46:51,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:46:51,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:46:51,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:46:52,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:46:52,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:46:52,163 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:46:52,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (1/1) ... [2018-07-24 11:46:52,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:46:52,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:46:52,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:46:52,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:46:52,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (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 11:46:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:46:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:46:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:46:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:46:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:46:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:46:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:46:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:46:56,861 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:46:56,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:46:56 BoogieIcfgContainer [2018-07-24 11:46:56,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:46:56,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:46:56,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:46:56,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:46:56,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:46:50" (1/3) ... [2018-07-24 11:46:56,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1919d63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:46:56, skipping insertion in model container [2018-07-24 11:46:56,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:46:51" (2/3) ... [2018-07-24 11:46:56,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1919d63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:46:56, skipping insertion in model container [2018-07-24 11:46:56,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:46:56" (3/3) ... [2018-07-24 11:46:56,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label34_false-unreach-call.c [2018-07-24 11:46:56,882 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:46:56,890 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:46:56,946 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:46:56,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:46:56,947 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:46:56,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:46:56,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:46:56,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:46:56,947 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:46:56,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:46:56,948 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:46:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-24 11:46:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 11:46:56,995 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:46:56,996 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:46:56,997 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:46:57,002 INFO L82 PathProgramCache]: Analyzing trace with hash 138276649, now seen corresponding path program 1 times [2018-07-24 11:46:57,005 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:46:57,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:46:57,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:46:57,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:46:57,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:46:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:46:57,329 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 11:46:57,333 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:46:57,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:46:57,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:46:57,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:46:57,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:46:57,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:46:57,357 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-07-24 11:47:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:47:01,111 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-07-24 11:47:01,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:47:01,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-24 11:47:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:47:01,137 INFO L225 Difference]: With dead ends: 982 [2018-07-24 11:47:01,138 INFO L226 Difference]: Without dead ends: 683 [2018-07-24 11:47:01,148 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 11:47:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-07-24 11:47:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-07-24 11:47:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-24 11:47:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-07-24 11:47:01,249 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 15 [2018-07-24 11:47:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:47:01,250 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-07-24 11:47:01,250 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:47:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-07-24 11:47:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-24 11:47:01,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:47:01,255 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:47:01,255 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:47:01,255 INFO L82 PathProgramCache]: Analyzing trace with hash -932868572, now seen corresponding path program 1 times [2018-07-24 11:47:01,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:47:01,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:01,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:01,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:01,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:47:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:47:02,046 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:47:02,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 11:47:02,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:47:02,049 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 11:47:02,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 11:47:02,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:47:02,050 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-07-24 11:47:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:47:10,959 INFO L93 Difference]: Finished difference Result 1980 states and 3020 transitions. [2018-07-24 11:47:10,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 11:47:10,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2018-07-24 11:47:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:47:10,972 INFO L225 Difference]: With dead ends: 1980 [2018-07-24 11:47:10,972 INFO L226 Difference]: Without dead ends: 1303 [2018-07-24 11:47:10,977 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:47:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2018-07-24 11:47:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1244. [2018-07-24 11:47:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2018-07-24 11:47:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1781 transitions. [2018-07-24 11:47:11,059 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1781 transitions. Word has length 89 [2018-07-24 11:47:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:47:11,060 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1781 transitions. [2018-07-24 11:47:11,060 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 11:47:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1781 transitions. [2018-07-24 11:47:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-24 11:47:11,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:47:11,068 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:47:11,068 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:47:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash 912515405, now seen corresponding path program 1 times [2018-07-24 11:47:11,068 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:47:11,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:11,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:11,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:11,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:47:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:47:11,211 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:47:11,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:47:11,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:47:11,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:47:11,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:47:11,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:47:11,213 INFO L87 Difference]: Start difference. First operand 1244 states and 1781 transitions. Second operand 3 states. [2018-07-24 11:47:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:47:13,649 INFO L93 Difference]: Finished difference Result 3568 states and 5227 transitions. [2018-07-24 11:47:13,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:47:13,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2018-07-24 11:47:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:47:13,670 INFO L225 Difference]: With dead ends: 3568 [2018-07-24 11:47:13,670 INFO L226 Difference]: Without dead ends: 2330 [2018-07-24 11:47:13,678 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:47:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2018-07-24 11:47:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2320. [2018-07-24 11:47:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-07-24 11:47:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3096 transitions. [2018-07-24 11:47:13,761 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3096 transitions. Word has length 147 [2018-07-24 11:47:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:47:13,764 INFO L471 AbstractCegarLoop]: Abstraction has 2320 states and 3096 transitions. [2018-07-24 11:47:13,764 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:47:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3096 transitions. [2018-07-24 11:47:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-24 11:47:13,778 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:47:13,778 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:47:13,778 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:47:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1349810078, now seen corresponding path program 1 times [2018-07-24 11:47:13,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:47:13,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:13,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:13,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:13,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:47:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:14,092 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:47:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:47:14,486 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:47:14,486 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 11:47:14,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:14,505 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:47:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:14,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:47:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 11:47:14,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:47:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:47:15,575 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:47:15,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:47:15,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:47:15,580 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:47:15,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:47:15,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:47:15,581 INFO L87 Difference]: Start difference. First operand 2320 states and 3096 transitions. Second operand 5 states. [2018-07-24 11:47:22,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:47:22,659 INFO L93 Difference]: Finished difference Result 7537 states and 10657 transitions. [2018-07-24 11:47:22,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:47:22,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-07-24 11:47:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:47:22,693 INFO L225 Difference]: With dead ends: 7537 [2018-07-24 11:47:22,693 INFO L226 Difference]: Without dead ends: 5223 [2018-07-24 11:47:22,710 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:47:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2018-07-24 11:47:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 5156. [2018-07-24 11:47:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2018-07-24 11:47:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 6938 transitions. [2018-07-24 11:47:22,877 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 6938 transitions. Word has length 162 [2018-07-24 11:47:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:47:22,878 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 6938 transitions. [2018-07-24 11:47:22,878 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:47:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 6938 transitions. [2018-07-24 11:47:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-24 11:47:22,882 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:47:22,883 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:22,883 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:47:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash -294152956, now seen corresponding path program 1 times [2018-07-24 11:47:22,883 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:47:22,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:22,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:22,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:47:22,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:47:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:23,422 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 11:47:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:47:24,108 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:47:24,108 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 11:47:24,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:47:24,116 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:47:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:47:24,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:47:59,602 WARN L169 SmtUtils]: Spent 34.75 s on a formula simplification. DAG size of input: 370 DAG size of output: 50 [2018-07-24 11:48:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:48:00,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:48:00,409 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-07-24 11:48:01,113 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-07-24 11:48:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:48:01,952 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:48:01,953 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:48:01,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:48:01,976 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:48:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:48:02,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:48:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:48:02,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:48:02,864 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-07-24 11:48:03,602 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-07-24 11:48:03,719 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-07-24 11:48:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:48:03,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:48:03,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 5] total 28 [2018-07-24 11:48:03,939 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:48:03,940 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 11:48:03,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 11:48:03,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2018-07-24 11:48:03,941 INFO L87 Difference]: Start difference. First operand 5156 states and 6938 transitions. Second operand 16 states. [2018-07-24 11:48:06,396 WARN L169 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2018-07-24 11:48:12,348 WARN L169 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2018-07-24 11:48:19,351 WARN L169 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 65 DAG size of output: 21 [2018-07-24 11:48:32,082 WARN L169 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 28 [2018-07-24 11:49:13,408 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 26 [2018-07-24 11:49:21,186 WARN L169 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 19 [2018-07-24 11:49:26,028 WARN L169 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-07-24 11:50:18,393 WARN L169 SmtUtils]: Spent 23.52 s on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-07-24 11:50:50,737 WARN L169 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2018-07-24 11:51:02,681 WARN L169 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2018-07-24 11:51:03,098 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 Received shutdown request... [2018-07-24 11:51:22,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-24 11:51:22,168 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:51:22,173 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:51:22,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:51:22 BoogieIcfgContainer [2018-07-24 11:51:22,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:51:22,175 INFO L168 Benchmark]: Toolchain (without parser) took 271180.80 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:51:22,176 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-07-24 11:51:22,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 985.93 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:51:22,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:51:22,178 INFO L168 Benchmark]: Boogie Preprocessor took 397.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.1 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:51:22,179 INFO L168 Benchmark]: RCFGBuilder took 4302.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:51:22,180 INFO L168 Benchmark]: TraceAbstraction took 265310.03 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 374.3 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -512.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:51:22,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 985.93 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 397.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.1 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4302.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 186.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265310.03 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 374.3 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -512.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (5156states) and interpolant automaton (currently 69 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (8779 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 265.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 220.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1223 SDtfs, 8285 SDslu, 1542 SDs, 0 SdLazy, 12071 SolverSat, 2123 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 165.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1253 GetRequests, 1132 SyntacticMatches, 8 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 89.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5156occurred in iteration=4, 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 136 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 1193 NumberOfCodeBlocks, 1193 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1756 ConstructedInterpolants, 7 QuantifiedInterpolants, 3459121 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 306/733 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/Problem11_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-51-22-203.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-51-22-203.csv Completed graceful shutdown