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/Problem15_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:11:25,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:11:25,321 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:11:25,337 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:11:25,338 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:11:25,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:11:25,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:11:25,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:11:25,347 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:11:25,349 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:11:25,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:11:25,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:11:25,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:11:25,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:11:25,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:11:25,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:11:25,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:11:25,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:11:25,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:11:25,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:11:25,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:11:25,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:11:25,381 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:11:25,381 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:11:25,381 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:11:25,383 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:11:25,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:11:25,384 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:11:25,385 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:11:25,388 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:11:25,388 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:11:25,389 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:11:25,389 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:11:25,389 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:11:25,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:11:25,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:11:25,393 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 12:11:25,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:11:25,425 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:11:25,428 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:11:25,428 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:11:25,428 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:11:25,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:11:25,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:11:25,429 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:11:25,429 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:11:25,429 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:11:25,430 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:11:25,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:11:25,431 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:11:25,431 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:11:25,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:11:25,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:11:25,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:11:25,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:11:25,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:11:25,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:11:25,435 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:11:25,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:11:25,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:11:25,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:11:25,436 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:11:25,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:11:25,438 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:11:25,438 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:11:25,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:11:25,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:11:25,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:11:25,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:11:25,441 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:11:25,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:11:25,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:11:25,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:11:25,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:11:25,543 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:11:25,543 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-07-24 12:11:25,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4922a716/06f7dcaa219c4a81a9122eb1c0060cff/FLAG3c9a27312 [2018-07-24 12:11:26,260 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:11:26,261 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-07-24 12:11:26,287 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4922a716/06f7dcaa219c4a81a9122eb1c0060cff/FLAG3c9a27312 [2018-07-24 12:11:26,310 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4922a716/06f7dcaa219c4a81a9122eb1c0060cff [2018-07-24 12:11:26,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:11:26,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:11:26,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:11:26,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:11:26,332 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:11:26,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:11:26" (1/1) ... [2018-07-24 12:11:26,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fa06d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:26, skipping insertion in model container [2018-07-24 12:11:26,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:11:26" (1/1) ... [2018-07-24 12:11:26,583 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:11:27,189 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:11:27,205 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:11:27,560 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:11:27,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27 WrapperNode [2018-07-24 12:11:27,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:11:27,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:11:27,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:11:27,779 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:11:27,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:27,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:11:28,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:11:28,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:11:28,069 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:11:28,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... [2018-07-24 12:11:28,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:11:28,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:11:28,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:11:28,681 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:11:28,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:11:28,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:11:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:11:28,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:11:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:11:28,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:11:28,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:11:28,753 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 12:11:28,753 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 12:11:28,753 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 12:11:28,753 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 12:11:39,071 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:11:39,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:11:39 BoogieIcfgContainer [2018-07-24 12:11:39,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:11:39,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:11:39,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:11:39,077 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:11:39,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:11:26" (1/3) ... [2018-07-24 12:11:39,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a326008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:11:39, skipping insertion in model container [2018-07-24 12:11:39,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:11:27" (2/3) ... [2018-07-24 12:11:39,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a326008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:11:39, skipping insertion in model container [2018-07-24 12:11:39,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:11:39" (3/3) ... [2018-07-24 12:11:39,085 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label33_false-unreach-call.c [2018-07-24 12:11:39,095 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:11:39,104 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:11:39,158 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:11:39,159 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:11:39,159 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:11:39,159 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:11:39,160 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:11:39,160 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:11:39,160 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:11:39,160 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:11:39,160 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:11:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:11:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-24 12:11:39,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:39,201 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] [2018-07-24 12:11:39,202 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 12:11:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1879682633, now seen corresponding path program 1 times [2018-07-24 12:11:39,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:39,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:39,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:39,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:39,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:39,628 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 12:11:39,630 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:11:39,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:11:39,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:39,637 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:11:39,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:11:39,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:39,657 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-07-24 12:11:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:48,146 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-07-24 12:11:48,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:11:48,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-07-24 12:11:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:48,192 INFO L225 Difference]: With dead ends: 1550 [2018-07-24 12:11:48,192 INFO L226 Difference]: Without dead ends: 1106 [2018-07-24 12:11:48,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-07-24 12:11:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-07-24 12:11:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-07-24 12:11:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-07-24 12:11:48,322 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 29 [2018-07-24 12:11:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:48,323 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-07-24 12:11:48,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:11:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-07-24 12:11:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-24 12:11:48,331 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:48,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:48,332 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 12:11:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1346945756, now seen corresponding path program 1 times [2018-07-24 12:11:48,332 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:48,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:48,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:48,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:48,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:48,717 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:11:48,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:11:48,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:48,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:11:48,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:11:48,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:11:48,720 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 6 states. [2018-07-24 12:11:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:59,969 INFO L93 Difference]: Finished difference Result 2247 states and 3761 transitions. [2018-07-24 12:11:59,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 12:11:59,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-07-24 12:11:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:59,980 INFO L225 Difference]: With dead ends: 2247 [2018-07-24 12:11:59,981 INFO L226 Difference]: Without dead ends: 1491 [2018-07-24 12:11:59,985 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 12:11:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2018-07-24 12:12:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1457. [2018-07-24 12:12:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-07-24 12:12:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-07-24 12:12:00,037 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 102 [2018-07-24 12:12:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:00,038 INFO L471 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-07-24 12:12:00,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:12:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-07-24 12:12:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-24 12:12:00,041 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:00,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:00,042 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 12:12:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2085279468, now seen corresponding path program 1 times [2018-07-24 12:12:00,042 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:00,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:00,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:00,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:00,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:00,377 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:00,377 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 12:12:00,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:00,395 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:00,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:12:01,708 WARN L169 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:12:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:01,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:12:01,992 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:12:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:02,863 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:12:02,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-07-24 12:12:02,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:12:02,867 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:12:02,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:12:02,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:12:02,868 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 5 states. [2018-07-24 12:12:03,129 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:12:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:26,898 INFO L93 Difference]: Finished difference Result 4526 states and 6676 transitions. [2018-07-24 12:12:26,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:12:26,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-07-24 12:12:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:26,919 INFO L225 Difference]: With dead ends: 4526 [2018-07-24 12:12:26,919 INFO L226 Difference]: Without dead ends: 3075 [2018-07-24 12:12:26,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:12:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2018-07-24 12:12:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2666. [2018-07-24 12:12:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2018-07-24 12:12:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3780 transitions. [2018-07-24 12:12:27,007 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3780 transitions. Word has length 110 [2018-07-24 12:12:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:27,007 INFO L471 AbstractCegarLoop]: Abstraction has 2666 states and 3780 transitions. [2018-07-24 12:12:27,008 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:12:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3780 transitions. [2018-07-24 12:12:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-24 12:12:27,013 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:27,014 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:12:27,014 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 12:12:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1153470154, now seen corresponding path program 1 times [2018-07-24 12:12:27,014 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:27,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:27,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:27,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:27,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:28,044 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:12:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:28,214 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:28,215 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 12:12:28,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:28,224 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:28,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:12:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 99 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:28,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:12:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:29,409 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:29,409 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 12:12:29,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:29,427 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:29,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:12:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 12:12:29,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:12:30,096 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-07-24 12:12:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:12:30,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:12:30,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:12:30,702 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:12:30,703 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:12:30,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:12:30,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:12:30,704 INFO L87 Difference]: Start difference. First operand 2666 states and 3780 transitions. Second operand 14 states. [2018-07-24 12:13:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:06,841 INFO L93 Difference]: Finished difference Result 10264 states and 15296 transitions. [2018-07-24 12:13:06,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:13:06,842 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2018-07-24 12:13:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:06,890 INFO L225 Difference]: With dead ends: 10264 [2018-07-24 12:13:06,891 INFO L226 Difference]: Without dead ends: 7264 [2018-07-24 12:13:06,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 806 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=843, Invalid=2817, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:13:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7264 states. [2018-07-24 12:13:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7264 to 6138. [2018-07-24 12:13:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6138 states. [2018-07-24 12:13:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 8689 transitions. [2018-07-24 12:13:07,150 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 8689 transitions. Word has length 206 [2018-07-24 12:13:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:07,150 INFO L471 AbstractCegarLoop]: Abstraction has 6138 states and 8689 transitions. [2018-07-24 12:13:07,150 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:13:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 8689 transitions. [2018-07-24 12:13:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-24 12:13:07,158 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:07,159 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:13:07,159 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 12:13:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -932428151, now seen corresponding path program 1 times [2018-07-24 12:13:07,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:07,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:07,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:07,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:08,197 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:08,197 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:13:08,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:08,206 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:08,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 99 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:08,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:09,434 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:09,434 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:13:09,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:09,457 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:09,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 26 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 12:13:10,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 49 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:10,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:13:10,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:13:10,539 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:13:10,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:13:10,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:13:10,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:13:10,541 INFO L87 Difference]: Start difference. First operand 6138 states and 8689 transitions. Second operand 14 states. [2018-07-24 12:13:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:41,448 INFO L93 Difference]: Finished difference Result 14588 states and 21194 transitions. [2018-07-24 12:13:41,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-24 12:13:41,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 291 [2018-07-24 12:13:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:41,491 INFO L225 Difference]: With dead ends: 14588 [2018-07-24 12:13:41,491 INFO L226 Difference]: Without dead ends: 8032 [2018-07-24 12:13:41,528 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1143 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=905, Invalid=3001, Unknown=0, NotChecked=0, Total=3906 [2018-07-24 12:13:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2018-07-24 12:13:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 6122. [2018-07-24 12:13:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6122 states. [2018-07-24 12:13:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8533 transitions. [2018-07-24 12:13:41,713 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8533 transitions. Word has length 291 [2018-07-24 12:13:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:41,714 INFO L471 AbstractCegarLoop]: Abstraction has 6122 states and 8533 transitions. [2018-07-24 12:13:41,714 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:13:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8533 transitions. [2018-07-24 12:13:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-24 12:13:41,720 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:41,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:41,720 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 12:13:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1611760508, now seen corresponding path program 1 times [2018-07-24 12:13:41,721 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:41,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:41,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:41,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:41,722 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 12:13:42,122 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:42,122 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:13:42,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:42,131 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:42,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 12:13:42,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 12:13:42,586 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:13:42,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-07-24 12:13:42,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:42,587 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:13:42,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:13:42,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:13:42,587 INFO L87 Difference]: Start difference. First operand 6122 states and 8533 transitions. Second operand 4 states. [2018-07-24 12:13:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:13:48,241 INFO L93 Difference]: Finished difference Result 16855 states and 24466 transitions. [2018-07-24 12:13:48,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:13:48,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2018-07-24 12:13:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:13:48,285 INFO L225 Difference]: With dead ends: 16855 [2018-07-24 12:13:48,285 INFO L226 Difference]: Without dead ends: 10739 [2018-07-24 12:13:48,312 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:13:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10739 states. [2018-07-24 12:13:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10739 to 10646. [2018-07-24 12:13:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10646 states. [2018-07-24 12:13:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 14317 transitions. [2018-07-24 12:13:48,585 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 14317 transitions. Word has length 316 [2018-07-24 12:13:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:13:48,586 INFO L471 AbstractCegarLoop]: Abstraction has 10646 states and 14317 transitions. [2018-07-24 12:13:48,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:13:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 14317 transitions. [2018-07-24 12:13:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-24 12:13:48,596 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:13:48,596 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:13:48,596 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 12:13:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 383513609, now seen corresponding path program 1 times [2018-07-24 12:13:48,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:13:48,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:48,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:48,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:13:48,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:13:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:13:49,146 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:49,146 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 12:13:49,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:49,155 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:49,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:49,849 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 12:13:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:49,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:50,151 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:13:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:13:50,403 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:13:50,403 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 12:13:50,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:13:50,418 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:13:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:13:50,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:13:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:13:50,867 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:13:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:13:51,417 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:13:51,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5, 5, 5] total 17 [2018-07-24 12:13:51,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:13:51,418 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:13:51,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:13:51,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:13:51,419 INFO L87 Difference]: Start difference. First operand 10646 states and 14317 transitions. Second operand 5 states. [2018-07-24 12:14:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:01,112 INFO L93 Difference]: Finished difference Result 33421 states and 46634 transitions. [2018-07-24 12:14:01,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:14:01,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 348 [2018-07-24 12:14:01,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:01,225 INFO L225 Difference]: With dead ends: 33421 [2018-07-24 12:14:01,225 INFO L226 Difference]: Without dead ends: 23090 [2018-07-24 12:14:01,282 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1402 GetRequests, 1384 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:14:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23090 states. [2018-07-24 12:14:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23090 to 20321. [2018-07-24 12:14:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20321 states. [2018-07-24 12:14:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20321 states to 20321 states and 27089 transitions. [2018-07-24 12:14:01,802 INFO L78 Accepts]: Start accepts. Automaton has 20321 states and 27089 transitions. Word has length 348 [2018-07-24 12:14:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:01,803 INFO L471 AbstractCegarLoop]: Abstraction has 20321 states and 27089 transitions. [2018-07-24 12:14:01,803 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:14:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 20321 states and 27089 transitions. [2018-07-24 12:14:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-24 12:14:01,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:01,827 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:01,828 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 12:14:01,828 INFO L82 PathProgramCache]: Analyzing trace with hash 946943216, now seen corresponding path program 1 times [2018-07-24 12:14:01,828 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:01,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:01,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:01,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:01,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:02,556 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:02,556 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 12:14:02,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:02,725 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:02,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:03,177 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:03,376 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:03,376 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 12:14:03,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:03,395 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:03,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:03,904 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:14:04,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:04,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:14:04,165 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:04,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:14:04,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:14:04,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:14:04,167 INFO L87 Difference]: Start difference. First operand 20321 states and 27089 transitions. Second operand 9 states. [2018-07-24 12:14:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:16,150 INFO L93 Difference]: Finished difference Result 55625 states and 83002 transitions. [2018-07-24 12:14:16,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:14:16,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 462 [2018-07-24 12:14:16,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:16,375 INFO L225 Difference]: With dead ends: 55625 [2018-07-24 12:14:16,376 INFO L226 Difference]: Without dead ends: 35619 [2018-07-24 12:14:16,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1853 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:14:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35619 states. [2018-07-24 12:14:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35619 to 32467. [2018-07-24 12:14:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32467 states. [2018-07-24 12:14:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32467 states to 32467 states and 42799 transitions. [2018-07-24 12:14:17,527 INFO L78 Accepts]: Start accepts. Automaton has 32467 states and 42799 transitions. Word has length 462 [2018-07-24 12:14:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:17,528 INFO L471 AbstractCegarLoop]: Abstraction has 32467 states and 42799 transitions. [2018-07-24 12:14:17,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:14:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 32467 states and 42799 transitions. [2018-07-24 12:14:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-07-24 12:14:17,616 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:17,616 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:17,616 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 12:14:17,617 INFO L82 PathProgramCache]: Analyzing trace with hash 650098257, now seen corresponding path program 1 times [2018-07-24 12:14:17,617 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:17,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:17,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:17,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:17,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 194 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:14:18,819 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:18,819 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) [2018-07-24 12:14:18,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:18,830 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:19,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 12:14:19,349 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 194 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:14:19,598 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:19,599 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 12:14:19,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:19,615 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:20,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 12:14:20,146 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 194 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:14:20,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:20,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:14:20,511 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:20,513 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:14:20,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:14:20,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:14:20,514 INFO L87 Difference]: Start difference. First operand 32467 states and 42799 transitions. Second operand 9 states. [2018-07-24 12:14:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:32,700 INFO L93 Difference]: Finished difference Result 73396 states and 109663 transitions. [2018-07-24 12:14:32,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:14:32,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 526 [2018-07-24 12:14:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:33,310 INFO L225 Difference]: With dead ends: 73396 [2018-07-24 12:14:33,311 INFO L226 Difference]: Without dead ends: 41412 [2018-07-24 12:14:33,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2134 GetRequests, 2110 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:14:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41412 states. [2018-07-24 12:14:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41412 to 40869. [2018-07-24 12:14:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40869 states. [2018-07-24 12:14:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40869 states to 40869 states and 60407 transitions. [2018-07-24 12:14:35,115 INFO L78 Accepts]: Start accepts. Automaton has 40869 states and 60407 transitions. Word has length 526 [2018-07-24 12:14:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:35,116 INFO L471 AbstractCegarLoop]: Abstraction has 40869 states and 60407 transitions. [2018-07-24 12:14:35,116 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:14:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 40869 states and 60407 transitions. [2018-07-24 12:14:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-07-24 12:14:35,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:35,167 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:35,167 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 12:14:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2096695740, now seen corresponding path program 1 times [2018-07-24 12:14:35,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:35,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:35,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:35,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:35,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:35,635 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:14:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 255 proven. 247 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:14:36,741 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:36,741 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 12:14:36,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:36,750 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:36,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-07-24 12:14:37,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-07-24 12:14:37,760 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:37,760 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:14:37,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:37,776 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:38,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-07-24 12:14:38,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-07-24 12:14:38,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:38,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 13 [2018-07-24 12:14:38,687 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:38,688 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 12:14:38,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 12:14:38,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:14:38,688 INFO L87 Difference]: Start difference. First operand 40869 states and 60407 transitions. Second operand 12 states. [2018-07-24 12:14:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:52,719 INFO L93 Difference]: Finished difference Result 87028 states and 127765 transitions. [2018-07-24 12:14:52,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-24 12:14:52,719 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 532 [2018-07-24 12:14:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:53,026 INFO L225 Difference]: With dead ends: 87028 [2018-07-24 12:14:53,026 INFO L226 Difference]: Without dead ends: 45263 [2018-07-24 12:14:53,433 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2225 GetRequests, 2160 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=671, Invalid=2869, Unknown=0, NotChecked=0, Total=3540 [2018-07-24 12:14:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45263 states. [2018-07-24 12:14:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45263 to 43374. [2018-07-24 12:14:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43374 states. [2018-07-24 12:14:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43374 states to 43374 states and 51479 transitions. [2018-07-24 12:14:55,293 INFO L78 Accepts]: Start accepts. Automaton has 43374 states and 51479 transitions. Word has length 532 [2018-07-24 12:14:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:55,294 INFO L471 AbstractCegarLoop]: Abstraction has 43374 states and 51479 transitions. [2018-07-24 12:14:55,294 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 12:14:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 43374 states and 51479 transitions. [2018-07-24 12:14:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-07-24 12:14:55,312 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:55,313 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:55,313 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 12:14:55,314 INFO L82 PathProgramCache]: Analyzing trace with hash 697743572, now seen corresponding path program 1 times [2018-07-24 12:14:55,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:55,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:55,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:55,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:55,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 206 proven. 25 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-07-24 12:14:55,945 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:55,945 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:55,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:55,953 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:56,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:58,698 WARN L169 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2018-07-24 12:15:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 12:15:01,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:15:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 12:15:01,423 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:15:01,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 6] total 14 [2018-07-24 12:15:01,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:15:01,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:15:01,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:15:01,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2018-07-24 12:15:01,425 INFO L87 Difference]: Start difference. First operand 43374 states and 51479 transitions. Second operand 3 states. [2018-07-24 12:15:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:15:06,092 INFO L93 Difference]: Finished difference Result 86694 states and 104702 transitions. [2018-07-24 12:15:06,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:15:06,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 579 [2018-07-24 12:15:06,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:15:06,248 INFO L225 Difference]: With dead ends: 86694 [2018-07-24 12:15:06,248 INFO L226 Difference]: Without dead ends: 43793 [2018-07-24 12:15:06,905 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1153 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2018-07-24 12:15:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43793 states. [2018-07-24 12:15:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43793 to 43364. [2018-07-24 12:15:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43364 states. [2018-07-24 12:15:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43364 states to 43364 states and 51753 transitions. [2018-07-24 12:15:07,864 INFO L78 Accepts]: Start accepts. Automaton has 43364 states and 51753 transitions. Word has length 579 [2018-07-24 12:15:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:15:07,866 INFO L471 AbstractCegarLoop]: Abstraction has 43364 states and 51753 transitions. [2018-07-24 12:15:07,866 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:15:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 43364 states and 51753 transitions. [2018-07-24 12:15:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-07-24 12:15:07,881 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:15:07,881 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:07,882 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 12:15:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2085654815, now seen corresponding path program 1 times [2018-07-24 12:15:07,882 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:15:07,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:07,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:07,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:07,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:15:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-07-24 12:15:08,462 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:15:08,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:15:08,462 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:15:08,463 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:15:08,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:15:08,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:15:08,464 INFO L87 Difference]: Start difference. First operand 43364 states and 51753 transitions. Second operand 3 states. [2018-07-24 12:15:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:15:13,427 INFO L93 Difference]: Finished difference Result 94029 states and 114793 transitions. [2018-07-24 12:15:13,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:15:13,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 582 [2018-07-24 12:15:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:15:13,610 INFO L225 Difference]: With dead ends: 94029 [2018-07-24 12:15:13,610 INFO L226 Difference]: Without dead ends: 51138 [2018-07-24 12:15:13,792 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 12:15:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51138 states. [2018-07-24 12:15:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51138 to 50913. [2018-07-24 12:15:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50913 states. [2018-07-24 12:15:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50913 states to 50913 states and 60657 transitions. [2018-07-24 12:15:15,579 INFO L78 Accepts]: Start accepts. Automaton has 50913 states and 60657 transitions. Word has length 582 [2018-07-24 12:15:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:15:15,580 INFO L471 AbstractCegarLoop]: Abstraction has 50913 states and 60657 transitions. [2018-07-24 12:15:15,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:15:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 50913 states and 60657 transitions. [2018-07-24 12:15:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-07-24 12:15:15,598 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:15:15,599 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:15,599 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 12:15:15,600 INFO L82 PathProgramCache]: Analyzing trace with hash 530796322, now seen corresponding path program 1 times [2018-07-24 12:15:15,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:15:15,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:15,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:15,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:15,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:15:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-07-24 12:15:16,068 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:15:16,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:15:16,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:15:16,069 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:15:16,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:15:16,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:15:16,070 INFO L87 Difference]: Start difference. First operand 50913 states and 60657 transitions. Second operand 3 states. [2018-07-24 12:15:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:15:20,578 INFO L93 Difference]: Finished difference Result 119793 states and 145445 transitions. [2018-07-24 12:15:20,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:15:20,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 612 [2018-07-24 12:15:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:15:20,771 INFO L225 Difference]: With dead ends: 119793 [2018-07-24 12:15:20,771 INFO L226 Difference]: Without dead ends: 51879 [2018-07-24 12:15:21,047 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:15:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51879 states. [2018-07-24 12:15:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51879 to 50600. [2018-07-24 12:15:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50600 states. [2018-07-24 12:15:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50600 states to 50600 states and 57819 transitions. [2018-07-24 12:15:23,028 INFO L78 Accepts]: Start accepts. Automaton has 50600 states and 57819 transitions. Word has length 612 [2018-07-24 12:15:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:15:23,028 INFO L471 AbstractCegarLoop]: Abstraction has 50600 states and 57819 transitions. [2018-07-24 12:15:23,028 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:15:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 50600 states and 57819 transitions. [2018-07-24 12:15:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2018-07-24 12:15:23,056 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:15:23,057 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:15:23,057 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 12:15:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1024456103, now seen corresponding path program 1 times [2018-07-24 12:15:23,057 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:15:23,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:23,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:23,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:23,058 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:15:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 101 proven. 565 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 12:15:24,819 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:15:24,819 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) Received shutdown request... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:15:25,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:25,652 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:15:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:25,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:15:25,905 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:15:26,106 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:15:26,107 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:15:26,114 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:15:26,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:15:26 BoogieIcfgContainer [2018-07-24 12:15:26,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:15:26,115 INFO L168 Benchmark]: Toolchain (without parser) took 239793.04 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,116 INFO L168 Benchmark]: CDTParser took 0.23 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 12:15:26,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1452.90 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 289.99 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,125 INFO L168 Benchmark]: Boogie Preprocessor took 611.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 895.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,126 INFO L168 Benchmark]: RCFGBuilder took 10392.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 338.1 MB). Peak memory consumption was 338.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,128 INFO L168 Benchmark]: TraceAbstraction took 227040.94 ms. Allocated memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -481.3 MB). Peak memory consumption was 718.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:15:26,140 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1452.90 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 289.99 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 611.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 895.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10392.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 338.1 MB). Peak memory consumption was 338.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227040.94 ms. Allocated memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -481.3 MB). Peak memory consumption was 718.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 696 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 226.9s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 182.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4493 SDtfs, 30415 SDslu, 4311 SDs, 0 SdLazy, 51916 SolverSat, 11767 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 151.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11784 GetRequests, 11474 SyntacticMatches, 32 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3483 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50913occurred in iteration=12, 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: 10.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 14202 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 10430 NumberOfCodeBlocks, 10430 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 16122 ConstructedInterpolants, 27 QuantifiedInterpolants, 23024098 SizeOfPredicates, 38 NumberOfNonLiveVariables, 8745 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 43 InterpolantComputations, 9 PerfectInterpolantSequences, 9370/10622 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label33_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-15-26-164.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label33_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-15-26-164.csv Completed graceful shutdown