java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:26:22,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:26:22,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:26:22,303 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:26:22,303 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:26:22,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:26:22,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:26:22,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:26:22,313 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:26:22,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:26:22,315 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:26:22,315 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:26:22,318 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:26:22,319 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:26:22,320 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:26:22,321 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:26:22,322 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:26:22,326 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:26:22,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:26:22,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:26:22,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:26:22,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:26:22,350 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:26:22,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:26:22,351 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:26:22,353 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:26:22,354 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:26:22,357 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:26:22,358 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:26:22,360 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:26:22,360 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:26:22,361 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:26:22,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:26:22,362 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:26:22,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:26:22,365 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:26:22,365 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 12:26:22,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:26:22,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:26:22,398 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:26:22,398 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:26:22,398 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:26:22,398 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:26:22,399 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:26:22,399 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:26:22,399 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:26:22,399 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:26:22,402 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:26:22,403 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:26:22,403 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:26:22,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:26:22,404 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:26:22,404 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:26:22,404 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:26:22,404 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:26:22,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:26:22,406 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:26:22,406 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:26:22,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:26:22,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:26:22,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:26:22,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:26:22,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:26:22,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:26:22,408 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:26:22,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:26:22,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:26:22,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:26:22,409 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:26:22,409 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:26:22,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:26:22,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:26:22,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:26:22,510 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:26:22,511 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:26:22,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-07-24 12:26:22,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560cc269f/f93f2cd31aea4b94a33947db80ae86fe/FLAG3f7d84004 [2018-07-24 12:26:23,359 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:26:23,360 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-07-24 12:26:23,390 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560cc269f/f93f2cd31aea4b94a33947db80ae86fe/FLAG3f7d84004 [2018-07-24 12:26:23,407 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560cc269f/f93f2cd31aea4b94a33947db80ae86fe [2018-07-24 12:26:23,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:26:23,420 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:26:23,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:26:23,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:26:23,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:26:23,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:26:23" (1/1) ... [2018-07-24 12:26:23,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:23, skipping insertion in model container [2018-07-24 12:26:23,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:26:23" (1/1) ... [2018-07-24 12:26:23,705 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:26:24,505 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:26:24,523 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:26:25,098 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:26:25,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25 WrapperNode [2018-07-24 12:26:25,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:26:25,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:26:25,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:26:25,291 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:26:25,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:25,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:25,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:26:25,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:26:25,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:26:25,579 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:26:26,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (1/1) ... [2018-07-24 12:26:26,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:26:26,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:26:26,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:26:26,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:26:26,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (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 12:26:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:26:26,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:26:26,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:26:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:26:26,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:26:26,491 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 12:26:26,491 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 12:26:26,492 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 12:26:26,492 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 12:26:38,139 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:26:38,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:26:38 BoogieIcfgContainer [2018-07-24 12:26:38,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:26:38,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:26:38,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:26:38,147 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:26:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:26:23" (1/3) ... [2018-07-24 12:26:38,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5c77c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:26:38, skipping insertion in model container [2018-07-24 12:26:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:26:25" (2/3) ... [2018-07-24 12:26:38,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5c77c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:26:38, skipping insertion in model container [2018-07-24 12:26:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:26:38" (3/3) ... [2018-07-24 12:26:38,152 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label37_false-unreach-call.c [2018-07-24 12:26:38,165 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:26:38,181 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:26:38,261 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:26:38,262 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:26:38,262 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:26:38,263 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:26:38,263 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:26:38,263 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:26:38,263 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:26:38,263 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:26:38,264 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:26:38,315 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 12:26:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-24 12:26:38,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:38,331 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] [2018-07-24 12:26:38,332 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 12:26:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -715477866, now seen corresponding path program 1 times [2018-07-24 12:26:38,342 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:38,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:38,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:38,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:38,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:38,835 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 12:26:38,847 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 12:26:38,850 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:26:38,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:26:38,851 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:38,856 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:26:38,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:26:38,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:26:38,879 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 12:26:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:26:51,722 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-07-24 12:26:51,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:26:51,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-07-24 12:26:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:26:51,773 INFO L225 Difference]: With dead ends: 2166 [2018-07-24 12:26:51,773 INFO L226 Difference]: Without dead ends: 1556 [2018-07-24 12:26:51,784 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:26:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-07-24 12:26:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-07-24 12:26:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-07-24 12:26:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-07-24 12:26:51,920 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 25 [2018-07-24 12:26:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:26:51,920 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-07-24 12:26:51,921 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:26:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-07-24 12:26:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-24 12:26:51,926 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:26:51,927 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:26:51,927 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 12:26:51,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1713129391, now seen corresponding path program 1 times [2018-07-24 12:26:51,928 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:26:51,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:51,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:26:51,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:26:51,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:26:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:26:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:26:52,246 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:26:52,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:26:52,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:26:52,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:26:52,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:26:52,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:26:52,249 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-07-24 12:27:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:01,014 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-07-24 12:27:01,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:27:01,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-07-24 12:27:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:01,033 INFO L225 Difference]: With dead ends: 3059 [2018-07-24 12:27:01,033 INFO L226 Difference]: Without dead ends: 1997 [2018-07-24 12:27:01,038 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 12:27:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-07-24 12:27:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-07-24 12:27:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-07-24 12:27:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-07-24 12:27:01,114 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 101 [2018-07-24 12:27:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:01,114 INFO L471 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-07-24 12:27:01,114 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:27:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-07-24 12:27:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-24 12:27:01,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:01,122 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:27:01,122 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 12:27:01,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1608110391, now seen corresponding path program 1 times [2018-07-24 12:27:01,123 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:01,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:01,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:01,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:01,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:01,464 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:01,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:27:01,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:01,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:27:01,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:27:01,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:27:01,465 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-07-24 12:27:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:08,115 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-07-24 12:27:08,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:27:08,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-07-24 12:27:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:08,134 INFO L225 Difference]: With dead ends: 4880 [2018-07-24 12:27:08,135 INFO L226 Difference]: Without dead ends: 2911 [2018-07-24 12:27:08,143 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 12:27:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-07-24 12:27:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-07-24 12:27:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-07-24 12:27:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-07-24 12:27:08,228 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 105 [2018-07-24 12:27:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:08,228 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-07-24 12:27:08,229 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:27:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-07-24 12:27:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-24 12:27:08,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:08,233 INFO L353 BasicCegarLoop]: trace histogram [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 12:27:08,233 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 12:27:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2116952774, now seen corresponding path program 1 times [2018-07-24 12:27:08,234 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:08,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:08,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:08,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:27:08,413 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:08,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:27:08,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:08,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:27:08,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:27:08,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:08,415 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-07-24 12:27:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:13,988 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-07-24 12:27:13,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:27:13,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-07-24 12:27:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:14,010 INFO L225 Difference]: With dead ends: 5754 [2018-07-24 12:27:14,011 INFO L226 Difference]: Without dead ends: 2880 [2018-07-24 12:27:14,022 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-07-24 12:27:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-07-24 12:27:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-07-24 12:27:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-07-24 12:27:14,104 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 135 [2018-07-24 12:27:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:14,104 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-07-24 12:27:14,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:27:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-07-24 12:27:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-24 12:27:14,109 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:14,109 INFO L353 BasicCegarLoop]: trace histogram [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, 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 12:27:14,109 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 12:27:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1103219040, now seen corresponding path program 1 times [2018-07-24 12:27:14,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:14,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:14,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:14,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:14,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 12:27:14,335 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:14,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:27:14,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:14,336 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:27:14,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:27:14,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:27:14,337 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 3 states. [2018-07-24 12:27:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:19,878 INFO L93 Difference]: Finished difference Result 8399 states and 11033 transitions. [2018-07-24 12:27:19,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:27:19,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-07-24 12:27:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:19,904 INFO L225 Difference]: With dead ends: 8399 [2018-07-24 12:27:19,904 INFO L226 Difference]: Without dead ends: 5525 [2018-07-24 12:27:19,915 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:27:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2018-07-24 12:27:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5525. [2018-07-24 12:27:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2018-07-24 12:27:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6667 transitions. [2018-07-24 12:27:20,038 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6667 transitions. Word has length 189 [2018-07-24 12:27:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:20,038 INFO L471 AbstractCegarLoop]: Abstraction has 5525 states and 6667 transitions. [2018-07-24 12:27:20,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:27:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6667 transitions. [2018-07-24 12:27:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-24 12:27:20,043 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:20,043 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:20,044 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 12:27:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1079924727, now seen corresponding path program 1 times [2018-07-24 12:27:20,044 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:20,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:20,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:20,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:27:20,817 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:20,818 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 12:27:20,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:20,826 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:20,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:27:21,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:21,587 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-07-24 12:27:21,986 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-07-24 12:27:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:27:22,300 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:27:22,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2018-07-24 12:27:22,300 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:22,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:27:22,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:27:22,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:27:22,301 INFO L87 Difference]: Start difference. First operand 5525 states and 6667 transitions. Second operand 5 states. [2018-07-24 12:27:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:31,007 INFO L93 Difference]: Finished difference Result 13279 states and 15892 transitions. [2018-07-24 12:27:31,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:27:31,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-07-24 12:27:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:31,053 INFO L225 Difference]: With dead ends: 13279 [2018-07-24 12:27:31,053 INFO L226 Difference]: Without dead ends: 7760 [2018-07-24 12:27:31,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 421 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:27:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2018-07-24 12:27:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 7698. [2018-07-24 12:27:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7698 states. [2018-07-24 12:27:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 9125 transitions. [2018-07-24 12:27:31,366 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 9125 transitions. Word has length 212 [2018-07-24 12:27:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:31,366 INFO L471 AbstractCegarLoop]: Abstraction has 7698 states and 9125 transitions. [2018-07-24 12:27:31,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:27:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 9125 transitions. [2018-07-24 12:27:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-24 12:27:31,377 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:31,377 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:31,377 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 12:27:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1357697255, now seen corresponding path program 1 times [2018-07-24 12:27:31,378 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:31,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:31,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:31,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:31,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:27:31,757 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:27:31,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:27:31,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:27:31,758 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:27:31,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:27:31,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:31,758 INFO L87 Difference]: Start difference. First operand 7698 states and 9125 transitions. Second operand 4 states. [2018-07-24 12:27:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:27:42,441 INFO L93 Difference]: Finished difference Result 20071 states and 24402 transitions. [2018-07-24 12:27:42,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:27:42,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 255 [2018-07-24 12:27:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:27:42,486 INFO L225 Difference]: With dead ends: 20071 [2018-07-24 12:27:42,487 INFO L226 Difference]: Without dead ends: 12379 [2018-07-24 12:27:42,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:27:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12379 states. [2018-07-24 12:27:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12379 to 12353. [2018-07-24 12:27:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12353 states. [2018-07-24 12:27:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12353 states to 12353 states and 14525 transitions. [2018-07-24 12:27:42,765 INFO L78 Accepts]: Start accepts. Automaton has 12353 states and 14525 transitions. Word has length 255 [2018-07-24 12:27:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:27:42,766 INFO L471 AbstractCegarLoop]: Abstraction has 12353 states and 14525 transitions. [2018-07-24 12:27:42,766 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:27:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 12353 states and 14525 transitions. [2018-07-24 12:27:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-24 12:27:42,774 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:27:42,774 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 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 12:27:42,775 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 12:27:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1004244641, now seen corresponding path program 1 times [2018-07-24 12:27:42,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:27:42,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:42,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:42,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:27:42,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:27:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 64 proven. 209 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 12:27:43,380 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:43,380 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 12:27:43,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:43,528 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:43,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 12:27:46,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 64 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:27:49,087 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:27:49,088 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:27:49,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:27:49,114 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:27:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:27:49,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:27:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 12:27:51,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:27:51,793 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 12:27:51,916 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 12:27:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 64 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:27:52,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:27:52,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 17 [2018-07-24 12:27:52,470 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:27:52,472 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:27:52,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:27:52,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2018-07-24 12:27:52,473 INFO L87 Difference]: Start difference. First operand 12353 states and 14525 transitions. Second operand 11 states. Received shutdown request... [2018-07-24 12:30:46,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:30:46,379 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:30:46,386 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:30:46,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:30:46 BoogieIcfgContainer [2018-07-24 12:30:46,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:30:46,387 INFO L168 Benchmark]: Toolchain (without parser) took 262968.02 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -526.9 MB). Peak memory consumption was 966.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,388 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:30:46,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1869.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 286.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,390 INFO L168 Benchmark]: Boogie Preprocessor took 839.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 929.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,391 INFO L168 Benchmark]: RCFGBuilder took 11723.34 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 500.3 MB). Peak memory consumption was 500.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,392 INFO L168 Benchmark]: TraceAbstraction took 248243.75 ms. Allocated memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: 564.1 MB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -106.3 MB). Peak memory consumption was 457.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:30:46,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1869.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 286.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 839.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 929.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11723.34 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 500.3 MB). Peak memory consumption was 500.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248243.75 ms. Allocated memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: 564.1 MB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -106.3 MB). Peak memory consumption was 457.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 62). Cancelled while BasicCegarLoop was constructing difference of abstraction (12353states) and interpolant automaton (currently 15 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (24043 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 248.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 233.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3467 SDtfs, 13865 SDslu, 2457 SDs, 0 SdLazy, 28035 SolverSat, 4774 SolverUnsat, 74 SolverUnknown, 0 SolverNotchecked, 223.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1553 GetRequests, 1489 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12353occurred in iteration=7, 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: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 629 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 2026 NumberOfCodeBlocks, 2026 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2752 ConstructedInterpolants, 186 QuantifiedInterpolants, 3875374 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1401 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 1250/2029 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label37_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-30-46-411.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label37_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-30-46-411.csv Completed graceful shutdown