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/Problem16_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:22:00,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:22:00,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:22:00,207 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:22:00,208 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:22:00,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:22:00,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:22:00,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:22:00,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:22:00,214 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:22:00,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:22:00,216 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:22:00,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:22:00,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:22:00,219 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:22:00,220 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:22:00,220 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:22:00,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:22:00,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:22:00,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:22:00,227 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:22:00,228 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:22:00,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:22:00,241 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:22:00,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:22:00,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:22:00,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:22:00,247 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 12:22:00,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:22:00,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:22:00,280 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:22:00,280 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:22:00,281 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:22:00,281 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:22:00,281 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:22:00,281 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:22:00,282 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:22:00,282 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:22:00,282 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:22:00,283 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:22:00,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:22:00,284 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:22:00,284 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:22:00,285 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:22:00,285 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:22:00,285 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:22:00,286 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:22:00,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:22:00,286 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:22:00,286 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:22:00,286 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:22:00,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:22:00,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:22:00,287 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:22:00,289 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:22:00,289 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:22:00,289 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:22:00,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:22:00,290 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:22:00,290 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:22:00,290 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:22:00,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:22:00,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:22:00,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:22:00,393 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:22:00,394 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:22:00,395 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label54_false-unreach-call.c [2018-07-24 12:22:00,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118713541/9d9b7074efb744bd99b7812dc0019100/FLAG4efc30bb0 [2018-07-24 12:22:01,139 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:22:01,140 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label54_false-unreach-call.c [2018-07-24 12:22:01,165 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118713541/9d9b7074efb744bd99b7812dc0019100/FLAG4efc30bb0 [2018-07-24 12:22:01,191 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118713541/9d9b7074efb744bd99b7812dc0019100 [2018-07-24 12:22:01,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:22:01,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:22:01,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:22:01,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:22:01,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:22:01,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:22:01" (1/1) ... [2018-07-24 12:22:01,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d541b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:01, skipping insertion in model container [2018-07-24 12:22:01,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:22:01" (1/1) ... [2018-07-24 12:22:01,505 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:22:02,043 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:22:02,061 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:22:02,334 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:22:02,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02 WrapperNode [2018-07-24 12:22:02,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:22:02,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:22:02,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:22:02,455 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:22:02,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:02,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:02,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:22:02,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:22:02,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:22:02,652 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:22:02,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:02,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:02,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:02,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:03,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:03,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:03,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... [2018-07-24 12:22:03,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:22:03,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:22:03,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:22:03,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:22:03,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:22:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:22:03,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:22:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:22:03,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:22:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:22:03,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:22:03,213 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_output2 [2018-07-24 12:22:03,213 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_output2 [2018-07-24 12:22:03,213 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 12:22:03,213 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 12:22:09,857 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:22:09,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:22:09 BoogieIcfgContainer [2018-07-24 12:22:09,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:22:09,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:22:09,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:22:09,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:22:09,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:22:01" (1/3) ... [2018-07-24 12:22:09,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6d102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:22:09, skipping insertion in model container [2018-07-24 12:22:09,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:22:02" (2/3) ... [2018-07-24 12:22:09,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6d102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:22:09, skipping insertion in model container [2018-07-24 12:22:09,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:22:09" (3/3) ... [2018-07-24 12:22:09,868 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label54_false-unreach-call.c [2018-07-24 12:22:09,879 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:22:09,889 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:22:09,953 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:22:09,954 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:22:09,954 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:22:09,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:22:09,955 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:22:09,955 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:22:09,955 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:22:09,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:22:09,955 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:22:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-24 12:22:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-24 12:22:09,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:09,998 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] [2018-07-24 12:22:09,998 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 12:22:10,006 INFO L82 PathProgramCache]: Analyzing trace with hash -113445908, now seen corresponding path program 1 times [2018-07-24 12:22:10,010 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:10,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:10,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:10,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:10,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:10,387 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 12:22:10,390 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:22:10,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:22:10,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:10,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:22:10,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:22:10,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:22:10,413 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-24 12:22:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:14,376 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-24 12:22:14,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:22:14,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-07-24 12:22:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:14,404 INFO L225 Difference]: With dead ends: 1156 [2018-07-24 12:22:14,404 INFO L226 Difference]: Without dead ends: 744 [2018-07-24 12:22:14,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:22:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-24 12:22:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-24 12:22:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 12:22:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-07-24 12:22:14,532 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 32 [2018-07-24 12:22:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:14,533 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-07-24 12:22:14,533 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:22:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-07-24 12:22:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-24 12:22:14,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:14,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:14,541 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 12:22:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2006837574, now seen corresponding path program 1 times [2018-07-24 12:22:14,542 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:14,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:14,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:14,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:14,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:14,905 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:22:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:22:14,973 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:22:14,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:22:14,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:14,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:22:14,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:22:14,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:22:14,977 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-07-24 12:22:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:21,393 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-07-24 12:22:21,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:22:21,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-07-24 12:22:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:21,415 INFO L225 Difference]: With dead ends: 2194 [2018-07-24 12:22:21,416 INFO L226 Difference]: Without dead ends: 1456 [2018-07-24 12:22:21,420 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:22:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-07-24 12:22:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-07-24 12:22:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-07-24 12:22:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-07-24 12:22:21,489 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 102 [2018-07-24 12:22:21,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:21,490 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-07-24 12:22:21,490 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:22:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-07-24 12:22:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-24 12:22:21,497 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:21,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:21,497 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 12:22:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash -551833837, now seen corresponding path program 1 times [2018-07-24 12:22:21,498 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:21,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:21,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:21,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:21,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:22:21,807 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:22:21,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:22:21,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:21,808 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:22:21,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:22:21,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:22:21,809 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-07-24 12:22:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:28,333 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-07-24 12:22:28,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:22:28,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-24 12:22:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:28,351 INFO L225 Difference]: With dead ends: 3936 [2018-07-24 12:22:28,351 INFO L226 Difference]: Without dead ends: 2506 [2018-07-24 12:22:28,360 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:22:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-07-24 12:22:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-07-24 12:22:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-07-24 12:22:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-07-24 12:22:28,437 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 131 [2018-07-24 12:22:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:28,438 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-07-24 12:22:28,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:22:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-07-24 12:22:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-24 12:22:28,442 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:28,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:28,442 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 12:22:28,443 INFO L82 PathProgramCache]: Analyzing trace with hash -537389617, now seen corresponding path program 1 times [2018-07-24 12:22:28,443 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:28,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:28,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:28,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:28,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:22:28,714 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:22:28,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:22:28,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:28,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:22:28,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:22:28,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:22:28,716 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-07-24 12:22:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:39,969 INFO L93 Difference]: Finished difference Result 8569 states and 14801 transitions. [2018-07-24 12:22:39,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:22:39,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-07-24 12:22:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:40,038 INFO L225 Difference]: With dead ends: 8569 [2018-07-24 12:22:40,038 INFO L226 Difference]: Without dead ends: 6096 [2018-07-24 12:22:40,076 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:22:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2018-07-24 12:22:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5992. [2018-07-24 12:22:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5992 states. [2018-07-24 12:22:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5992 states to 5992 states and 9338 transitions. [2018-07-24 12:22:40,291 INFO L78 Accepts]: Start accepts. Automaton has 5992 states and 9338 transitions. Word has length 149 [2018-07-24 12:22:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:40,291 INFO L471 AbstractCegarLoop]: Abstraction has 5992 states and 9338 transitions. [2018-07-24 12:22:40,291 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:22:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5992 states and 9338 transitions. [2018-07-24 12:22:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 12:22:40,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:40,300 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:22:40,300 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 12:22:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1681567800, now seen corresponding path program 1 times [2018-07-24 12:22:40,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:40,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:40,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:40,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:40,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:40,600 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:22:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 50 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:22:40,750 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:40,750 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 12:22:40,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:40,827 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:40,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-24 12:22:41,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:41,688 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:22:41,790 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:22:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 50 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:22:42,477 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:22:42,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:22:42,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:42,478 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:22:42,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:22:42,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:22:42,479 INFO L87 Difference]: Start difference. First operand 5992 states and 9338 transitions. Second operand 5 states. [2018-07-24 12:22:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:49,595 INFO L93 Difference]: Finished difference Result 16426 states and 26798 transitions. [2018-07-24 12:22:49,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:22:49,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-07-24 12:22:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:49,661 INFO L225 Difference]: With dead ends: 16426 [2018-07-24 12:22:49,662 INFO L226 Difference]: Without dead ends: 10440 [2018-07-24 12:22:49,758 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 402 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:22:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10440 states. [2018-07-24 12:22:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10440 to 10322. [2018-07-24 12:22:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10322 states. [2018-07-24 12:22:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10322 states to 10322 states and 14016 transitions. [2018-07-24 12:22:50,025 INFO L78 Accepts]: Start accepts. Automaton has 10322 states and 14016 transitions. Word has length 204 [2018-07-24 12:22:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:50,026 INFO L471 AbstractCegarLoop]: Abstraction has 10322 states and 14016 transitions. [2018-07-24 12:22:50,026 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:22:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10322 states and 14016 transitions. [2018-07-24 12:22:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-24 12:22:50,034 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:50,034 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:22:50,034 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:22:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1416487676, now seen corresponding path program 1 times [2018-07-24 12:22:50,035 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:50,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:50,036 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:50,275 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:22:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:22:50,727 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:50,728 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 12:22:50,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:50,736 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:50,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-24 12:22:50,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:22:51,310 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:22:51,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:22:51,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:22:51,311 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:22:51,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:22:51,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:22:51,312 INFO L87 Difference]: Start difference. First operand 10322 states and 14016 transitions. Second operand 5 states. [2018-07-24 12:22:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:56,956 INFO L93 Difference]: Finished difference Result 24934 states and 34995 transitions. [2018-07-24 12:22:56,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:22:56,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-07-24 12:22:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:57,075 INFO L225 Difference]: With dead ends: 24934 [2018-07-24 12:22:57,075 INFO L226 Difference]: Without dead ends: 14618 [2018-07-24 12:22:57,115 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 447 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:22:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14618 states. [2018-07-24 12:22:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14618 to 14540. [2018-07-24 12:22:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14540 states. [2018-07-24 12:22:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14540 states to 14540 states and 19317 transitions. [2018-07-24 12:22:57,519 INFO L78 Accepts]: Start accepts. Automaton has 14540 states and 19317 transitions. Word has length 226 [2018-07-24 12:22:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:57,524 INFO L471 AbstractCegarLoop]: Abstraction has 14540 states and 19317 transitions. [2018-07-24 12:22:57,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:22:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14540 states and 19317 transitions. [2018-07-24 12:22:57,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-24 12:22:57,543 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:57,543 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:57,544 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:22:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash 225765814, now seen corresponding path program 1 times [2018-07-24 12:22:57,544 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:57,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:57,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 151 proven. 72 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:22:58,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:58,277 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 12:22:58,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:58,288 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:58,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-24 12:22:58,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 151 proven. 72 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:22:59,102 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:59,102 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 12:22:59,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:59,129 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:59,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 12:22:59,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 83 proven. 155 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 12:22:59,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:22:59,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 12:22:59,861 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:22:59,863 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:22:59,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:22:59,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:22:59,865 INFO L87 Difference]: Start difference. First operand 14540 states and 19317 transitions. Second operand 9 states. [2018-07-24 12:23:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:23:08,761 INFO L93 Difference]: Finished difference Result 51867 states and 79844 transitions. [2018-07-24 12:23:08,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 12:23:08,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-07-24 12:23:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:23:09,107 INFO L225 Difference]: With dead ends: 51867 [2018-07-24 12:23:09,107 INFO L226 Difference]: Without dead ends: 34957 [2018-07-24 12:23:09,351 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:23:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34957 states. [2018-07-24 12:23:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34957 to 34791. [2018-07-24 12:23:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34791 states. [2018-07-24 12:23:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34791 states to 34791 states and 47746 transitions. [2018-07-24 12:23:11,282 INFO L78 Accepts]: Start accepts. Automaton has 34791 states and 47746 transitions. Word has length 314 [2018-07-24 12:23:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:23:11,283 INFO L471 AbstractCegarLoop]: Abstraction has 34791 states and 47746 transitions. [2018-07-24 12:23:11,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:23:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 34791 states and 47746 transitions. [2018-07-24 12:23:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-07-24 12:23:11,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:23:11,368 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:11,369 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:23:11,370 INFO L82 PathProgramCache]: Analyzing trace with hash 895519447, now seen corresponding path program 1 times [2018-07-24 12:23:11,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:23:11,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:11,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:11,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:11,371 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:23:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:12,260 WARN L169 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 12:23:12,724 WARN L169 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:23:13,911 WARN L169 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-07-24 12:23:14,779 WARN L169 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-07-24 12:23:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 170 proven. 116 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:23:15,533 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:15,533 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 12:23:15,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:15,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:15,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-24 12:23:16,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 170 proven. 116 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 12:23:16,591 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:16,591 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 12:23:16,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:16,608 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:16,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-07-24 12:23:17,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 83 proven. 199 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 12:23:18,275 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:23:18,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 5, 5, 5] total 24 [2018-07-24 12:23:18,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:23:18,276 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:23:18,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:23:18,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:23:18,278 INFO L87 Difference]: Start difference. First operand 34791 states and 47746 transitions. Second operand 5 states. [2018-07-24 12:23:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:23:25,031 INFO L93 Difference]: Finished difference Result 74524 states and 110603 transitions. [2018-07-24 12:23:25,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:23:25,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 515 [2018-07-24 12:23:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:23:25,353 INFO L225 Difference]: With dead ends: 74524 [2018-07-24 12:23:25,353 INFO L226 Difference]: Without dead ends: 30285 [2018-07-24 12:23:25,806 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2048 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2018-07-24 12:23:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30285 states. [2018-07-24 12:23:26,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30285 to 29904. [2018-07-24 12:23:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29904 states. [2018-07-24 12:23:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29904 states to 29904 states and 35558 transitions. [2018-07-24 12:23:26,819 INFO L78 Accepts]: Start accepts. Automaton has 29904 states and 35558 transitions. Word has length 515 [2018-07-24 12:23:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:23:26,820 INFO L471 AbstractCegarLoop]: Abstraction has 29904 states and 35558 transitions. [2018-07-24 12:23:26,820 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:23:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 29904 states and 35558 transitions. [2018-07-24 12:23:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-07-24 12:23:26,918 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:23:26,919 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:23:26,919 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:23:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash 216812174, now seen corresponding path program 1 times [2018-07-24 12:23:26,920 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:23:26,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:26,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:26,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:26,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:23:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:27,617 WARN L169 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:23:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 239 proven. 356 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-07-24 12:23:28,959 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:28,959 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 12:23:28,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:28,967 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:29,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 972 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-07-24 12:23:29,671 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 363 proven. 228 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-07-24 12:23:30,552 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:30,552 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:23:30,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:30,567 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:31,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 972 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-07-24 12:23:31,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 363 proven. 228 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-07-24 12:23:31,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:23:31,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 20 [2018-07-24 12:23:31,827 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:23:31,828 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:23:31,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:23:31,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:23:31,829 INFO L87 Difference]: Start difference. First operand 29904 states and 35558 transitions. Second operand 13 states. [2018-07-24 12:23:32,115 WARN L169 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:23:38,743 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-07-24 12:23:39,563 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-07-24 12:23:41,395 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-07-24 12:23:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:23:42,975 INFO L93 Difference]: Finished difference Result 66319 states and 79533 transitions. [2018-07-24 12:23:42,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-24 12:23:42,976 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 770 [2018-07-24 12:23:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:23:43,370 INFO L225 Difference]: With dead ends: 66319 [2018-07-24 12:23:43,370 INFO L226 Difference]: Without dead ends: 36426 [2018-07-24 12:23:43,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3141 GetRequests, 3093 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=537, Invalid=1719, Unknown=0, NotChecked=0, Total=2256 [2018-07-24 12:23:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36426 states. [2018-07-24 12:23:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36426 to 36369. [2018-07-24 12:23:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36369 states. [2018-07-24 12:23:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36369 states to 36369 states and 42747 transitions. [2018-07-24 12:23:44,950 INFO L78 Accepts]: Start accepts. Automaton has 36369 states and 42747 transitions. Word has length 770 [2018-07-24 12:23:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:23:44,951 INFO L471 AbstractCegarLoop]: Abstraction has 36369 states and 42747 transitions. [2018-07-24 12:23:44,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:23:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 36369 states and 42747 transitions. [2018-07-24 12:23:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2018-07-24 12:23:45,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:23:45,050 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:45,050 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:23:45,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1582105475, now seen corresponding path program 1 times [2018-07-24 12:23:45,051 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:23:45,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:45,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:45,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:45,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:23:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 332 proven. 228 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2018-07-24 12:23:46,618 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:46,618 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:23:46,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:46,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:46,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 1132 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-07-24 12:23:47,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 332 proven. 228 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2018-07-24 12:23:48,077 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:48,077 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:23:48,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:48,093 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:48,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 1132 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-07-24 12:23:49,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 332 proven. 228 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2018-07-24 12:23:49,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:23:49,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:23:49,897 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:23:49,899 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:23:49,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:23:49,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:23:49,900 INFO L87 Difference]: Start difference. First operand 36369 states and 42747 transitions. Second operand 9 states. [2018-07-24 12:23:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:23:55,836 INFO L93 Difference]: Finished difference Result 72164 states and 84903 transitions. [2018-07-24 12:23:55,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:23:55,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 995 [2018-07-24 12:23:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:23:56,036 INFO L225 Difference]: With dead ends: 72164 [2018-07-24 12:23:56,036 INFO L226 Difference]: Without dead ends: 36142 [2018-07-24 12:23:56,339 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3996 GetRequests, 3977 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:23:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36142 states. [2018-07-24 12:23:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36142 to 36122. [2018-07-24 12:23:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36122 states. [2018-07-24 12:23:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36122 states to 36122 states and 41035 transitions. [2018-07-24 12:23:57,224 INFO L78 Accepts]: Start accepts. Automaton has 36122 states and 41035 transitions. Word has length 995 [2018-07-24 12:23:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:23:57,226 INFO L471 AbstractCegarLoop]: Abstraction has 36122 states and 41035 transitions. [2018-07-24 12:23:57,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:23:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 36122 states and 41035 transitions. [2018-07-24 12:23:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2018-07-24 12:23:57,271 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:23:57,272 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:57,272 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:23:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 829527198, now seen corresponding path program 1 times [2018-07-24 12:23:57,272 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:23:57,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:57,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:57,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:57,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:23:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:23:58,360 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:58,360 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:23:58,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:58,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:58,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:23:59,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:24:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:24:00,150 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:24:00,150 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:24:00,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:00,166 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:24:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:00,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:24:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:24:01,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:24:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:24:01,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:24:01,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:24:01,924 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:24:01,925 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:24:01,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:24:01,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:24:01,926 INFO L87 Difference]: Start difference. First operand 36122 states and 41035 transitions. Second operand 9 states. [2018-07-24 12:24:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:24:08,908 INFO L93 Difference]: Finished difference Result 70163 states and 79730 transitions. [2018-07-24 12:24:08,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 12:24:08,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 996 [2018-07-24 12:24:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:24:08,992 INFO L225 Difference]: With dead ends: 70163 [2018-07-24 12:24:08,993 INFO L226 Difference]: Without dead ends: 27403 [2018-07-24 12:24:09,310 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4010 GetRequests, 3985 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:24:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27403 states. [2018-07-24 12:24:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27403 to 26295. [2018-07-24 12:24:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26295 states. [2018-07-24 12:24:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26295 states to 26295 states and 27992 transitions. [2018-07-24 12:24:09,779 INFO L78 Accepts]: Start accepts. Automaton has 26295 states and 27992 transitions. Word has length 996 [2018-07-24 12:24:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:24:09,780 INFO L471 AbstractCegarLoop]: Abstraction has 26295 states and 27992 transitions. [2018-07-24 12:24:09,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:24:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 26295 states and 27992 transitions. [2018-07-24 12:24:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2018-07-24 12:24:09,811 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:24:09,812 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:09,812 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:24:09,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1917383241, now seen corresponding path program 1 times [2018-07-24 12:24:09,814 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:24:09,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:09,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:09,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:09,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:24:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:10,851 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:24:11,239 WARN L169 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 12:24:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 581 proven. 273 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2018-07-24 12:24:13,656 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:24:13,656 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:24:13,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:13,666 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:24:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:13,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:24:14,560 WARN L169 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-07-24 12:24:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 708 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2018-07-24 12:24:15,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:24:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 125 proven. 667 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2018-07-24 12:24:16,570 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:24:16,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 5] total 18 [2018-07-24 12:24:16,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:24:16,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:24:16,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:24:16,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:24:16,572 INFO L87 Difference]: Start difference. First operand 26295 states and 27992 transitions. Second operand 5 states. [2018-07-24 12:24:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:24:20,339 INFO L93 Difference]: Finished difference Result 54077 states and 57544 transitions. [2018-07-24 12:24:20,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:24:20,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1039 [2018-07-24 12:24:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:24:20,408 INFO L225 Difference]: With dead ends: 54077 [2018-07-24 12:24:20,408 INFO L226 Difference]: Without dead ends: 28129 [2018-07-24 12:24:20,460 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2093 GetRequests, 2074 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:24:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28129 states. [2018-07-24 12:24:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28129 to 27611. [2018-07-24 12:24:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27611 states. [2018-07-24 12:24:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27611 states to 27611 states and 29315 transitions. [2018-07-24 12:24:20,907 INFO L78 Accepts]: Start accepts. Automaton has 27611 states and 29315 transitions. Word has length 1039 [2018-07-24 12:24:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:24:20,908 INFO L471 AbstractCegarLoop]: Abstraction has 27611 states and 29315 transitions. [2018-07-24 12:24:20,908 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:24:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27611 states and 29315 transitions. [2018-07-24 12:24:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2018-07-24 12:24:20,942 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:24:20,943 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 12:24:20,943 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:24:20,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1789689709, now seen corresponding path program 1 times [2018-07-24 12:24:20,944 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:24:20,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:20,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:20,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:20,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:24:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 862 proven. 273 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-07-24 12:24:25,502 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:24:25,503 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:24:25,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:25,511 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:24:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:25,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:24:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 1658 proven. 6 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2018-07-24 12:24:27,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:24:27,323 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-07-24 12:24:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 171 proven. 1577 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2018-07-24 12:24:30,891 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:24:30,891 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:24:30,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:30,908 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:24:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:31,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:24:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 1417 proven. 6 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2018-07-24 12:24:33,471 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:24:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2487 backedges. 173 proven. 1575 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2018-07-24 12:24:40,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:24:40,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8, 7, 8] total 34 [2018-07-24 12:24:40,041 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:24:40,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 12:24:40,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 12:24:40,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2018-07-24 12:24:40,043 INFO L87 Difference]: Start difference. First operand 27611 states and 29315 transitions. Second operand 19 states. [2018-07-24 12:24:42,151 WARN L169 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 17 [2018-07-24 12:24:43,107 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-07-24 12:24:43,302 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-07-24 12:24:46,407 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-07-24 12:24:46,726 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-07-24 12:24:50,266 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-07-24 12:24:50,580 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-07-24 12:24:51,588 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-07-24 12:24:54,041 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-07-24 12:24:54,406 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-07-24 12:24:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:24:55,194 INFO L93 Difference]: Finished difference Result 55257 states and 58752 transitions. [2018-07-24 12:24:55,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 12:24:55,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1287 [2018-07-24 12:24:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:24:55,246 INFO L225 Difference]: With dead ends: 55257 [2018-07-24 12:24:55,247 INFO L226 Difference]: Without dead ends: 28330 [2018-07-24 12:24:55,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5219 GetRequests, 5149 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=795, Invalid=3761, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 12:24:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28330 states. [2018-07-24 12:24:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28330 to 27951. [2018-07-24 12:24:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27951 states. [2018-07-24 12:24:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27951 states to 27951 states and 29638 transitions. [2018-07-24 12:24:55,652 INFO L78 Accepts]: Start accepts. Automaton has 27951 states and 29638 transitions. Word has length 1287 [2018-07-24 12:24:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:24:55,653 INFO L471 AbstractCegarLoop]: Abstraction has 27951 states and 29638 transitions. [2018-07-24 12:24:55,653 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-24 12:24:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 27951 states and 29638 transitions. [2018-07-24 12:24:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2018-07-24 12:24:55,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:24:55,690 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:55,691 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:24:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2002836016, now seen corresponding path program 1 times [2018-07-24 12:24:55,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:24:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:55,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:24:55,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:24:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1218 proven. 2 refuted. 0 times theorem prover too weak. 2359 trivial. 0 not checked. [2018-07-24 12:24:57,452 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:24:57,452 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:24:57,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:24:57,459 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:24:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:24:57,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:24:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1806 proven. 2 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2018-07-24 12:24:58,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:25:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 231 proven. 1703 refuted. 0 times theorem prover too weak. 1645 trivial. 0 not checked. [2018-07-24 12:25:01,407 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:25:01,407 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:25:01,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:01,422 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:25:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:02,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:25:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1218 proven. 26 refuted. 0 times theorem prover too weak. 2335 trivial. 0 not checked. [2018-07-24 12:25:03,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:25:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1218 proven. 2 refuted. 0 times theorem prover too weak. 2359 trivial. 0 not checked. [2018-07-24 12:25:06,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:25:06,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8, 6, 5] total 21 [2018-07-24 12:25:06,706 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:25:06,708 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 12:25:06,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 12:25:06,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:25:06,709 INFO L87 Difference]: Start difference. First operand 27951 states and 29638 transitions. Second operand 12 states. [2018-07-24 12:25:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:25:17,426 INFO L93 Difference]: Finished difference Result 55774 states and 59179 transitions. [2018-07-24 12:25:17,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-24 12:25:17,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1330 [2018-07-24 12:25:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:25:17,479 INFO L225 Difference]: With dead ends: 55774 [2018-07-24 12:25:17,479 INFO L226 Difference]: Without dead ends: 28847 [2018-07-24 12:25:17,519 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5365 GetRequests, 5321 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 12:25:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28847 states. [2018-07-24 12:25:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28847 to 27955. [2018-07-24 12:25:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27955 states. [2018-07-24 12:25:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27955 states to 27955 states and 29597 transitions. [2018-07-24 12:25:17,915 INFO L78 Accepts]: Start accepts. Automaton has 27955 states and 29597 transitions. Word has length 1330 [2018-07-24 12:25:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:25:17,916 INFO L471 AbstractCegarLoop]: Abstraction has 27955 states and 29597 transitions. [2018-07-24 12:25:17,916 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 12:25:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27955 states and 29597 transitions. [2018-07-24 12:25:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1481 [2018-07-24 12:25:17,955 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:25:17,956 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:25:17,956 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:25:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash -169492166, now seen corresponding path program 1 times [2018-07-24 12:25:17,957 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:25:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:17,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:17,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:17,958 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:25:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:19,775 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:25:20,047 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 12:25:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 1012 proven. 380 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2018-07-24 12:25:21,897 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:25:21,897 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:25:21,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:21,909 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:25:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:22,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:25:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 2610 proven. 2 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2018-07-24 12:25:23,546 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:25:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 1012 proven. 380 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2018-07-24 12:25:26,856 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:25:26,856 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:25:26,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:26,873 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:25:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:27,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:25:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 2608 proven. 30 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-07-24 12:25:29,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:25:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3790 backedges. 1012 proven. 380 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2018-07-24 12:25:32,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:25:32,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 7, 5] total 18 [2018-07-24 12:25:32,447 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:25:32,448 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:25:32,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:25:32,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:25:32,449 INFO L87 Difference]: Start difference. First operand 27955 states and 29597 transitions. Second operand 11 states. [2018-07-24 12:25:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:25:41,711 INFO L93 Difference]: Finished difference Result 52961 states and 56320 transitions. [2018-07-24 12:25:41,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 12:25:41,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1480 [2018-07-24 12:25:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:25:41,765 INFO L225 Difference]: With dead ends: 52961 [2018-07-24 12:25:41,765 INFO L226 Difference]: Without dead ends: 28739 [2018-07-24 12:25:41,800 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5963 GetRequests, 5925 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2018-07-24 12:25:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2018-07-24 12:25:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 27953. [2018-07-24 12:25:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27953 states. [2018-07-24 12:25:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27953 states to 27953 states and 29576 transitions. [2018-07-24 12:25:42,290 INFO L78 Accepts]: Start accepts. Automaton has 27953 states and 29576 transitions. Word has length 1480 [2018-07-24 12:25:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:25:42,291 INFO L471 AbstractCegarLoop]: Abstraction has 27953 states and 29576 transitions. [2018-07-24 12:25:42,291 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:25:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27953 states and 29576 transitions. [2018-07-24 12:25:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2018-07-24 12:25:42,326 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:25:42,326 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:25:42,327 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:25:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash 199239946, now seen corresponding path program 1 times [2018-07-24 12:25:42,327 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:25:42,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:42,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:42,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:25:42,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:25:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:43,606 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:25:43,874 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:25:44,641 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 Received shutdown request... [2018-07-24 12:25:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 3105 proven. 796 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2018-07-24 12:25:48,371 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:25:48,371 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:25:48,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:25:48,383 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:25:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:25:48,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:25:48,917 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:25:49,119 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:25:49,119 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:25:49,124 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:25:49,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:25:49 BoogieIcfgContainer [2018-07-24 12:25:49,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:25:49,125 INFO L168 Benchmark]: Toolchain (without parser) took 227920.07 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -381.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,126 INFO L168 Benchmark]: CDTParser took 0.23 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 12:25:49,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1243.84 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.69 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,128 INFO L168 Benchmark]: Boogie Preprocessor took 473.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.0 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,129 INFO L168 Benchmark]: RCFGBuilder took 6733.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.6 MB). Peak memory consumption was 264.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,130 INFO L168 Benchmark]: TraceAbstraction took 219264.69 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 158.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:25:49,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1243.84 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.69 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 473.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.0 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6733.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.6 MB). Peak memory consumption was 264.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219264.69 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 158.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 1661 with TraceHistMax 10, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 219.1s OverallTime, 16 OverallIterations, 10 TraceHistogramMax, 123.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1440 SDtfs, 34709 SDslu, 3010 SDs, 0 SdLazy, 66304 SolverSat, 7994 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 91.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34044 GetRequests, 33682 SyntacticMatches, 35 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2617 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36369occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 4654 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 8.5s SatisfiabilityAnalysisTime, 58.7s InterpolantComputationTime, 26413 NumberOfCodeBlocks, 26413 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 43203 ConstructedInterpolants, 0 QuantifiedInterpolants, 219752526 SizeOfPredicates, 26 NumberOfNonLiveVariables, 22626 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 53 InterpolantComputations, 8 PerfectInterpolantSequences, 69614/79428 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/Problem16_label54_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-25-49-149.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label54_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-25-49-149.csv Completed graceful shutdown