java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:00:20,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:00:20,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:00:20,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:00:20,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:00:20,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:00:20,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:00:20,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:00:20,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:00:20,434 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:00:20,435 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:00:20,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:00:20,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:00:20,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:00:20,438 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:00:20,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:00:20,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:00:20,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:00:20,443 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:00:20,444 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:00:20,445 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:00:20,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:00:20,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-08-07 11:00:20,453 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:00:20,454 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:00:20,455 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:00:20,455 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:00:20,455 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 [2018-08-07 11:00:20,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:00:20,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:00:20,474 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:00:20,475 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:00:20,475 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:00:20,475 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:00:20,475 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:00:20,475 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:00:20,476 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:00:20,476 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:00:20,476 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:00:20,477 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:00:20,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:00:20,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:00:20,478 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:00:20,478 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:00:20,478 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:00:20,479 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:00:20,479 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:00:20,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:00:20,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:00:20,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:00:20,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:00:20,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:00:20,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:00:20,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:00:20,482 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:00:20,483 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:00:20,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:00:20,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:00:20,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:00:20,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:00:20,559 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:00:20,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-08-07 11:00:20,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eddf2ed0/887f5724dc464d30ad64045011622b6b/FLAGfd7fe5818 [2018-08-07 11:00:21,237 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:00:21,238 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-08-07 11:00:21,261 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eddf2ed0/887f5724dc464d30ad64045011622b6b/FLAGfd7fe5818 [2018-08-07 11:00:21,277 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eddf2ed0/887f5724dc464d30ad64045011622b6b [2018-08-07 11:00:21,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:00:21,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:00:21,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:00:21,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:00:21,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:00:21,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:00:21" (1/1) ... [2018-08-07 11:00:21,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6064ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:21, skipping insertion in model container [2018-08-07 11:00:21,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:00:21" (1/1) ... [2018-08-07 11:00:21,565 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:00:22,055 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:00:22,075 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:00:22,345 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:00:22,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22 WrapperNode [2018-08-07 11:00:22,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:00:22,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:00:22,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:00:22,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:00:22,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:00:22,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:00:22,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:00:22,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:00:22,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (1/1) ... [2018-08-07 11:00:22,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:00:22,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:00:22,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:00:22,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:00:22,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (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 [2018-08-07 11:00:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:00:23,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:00:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:00:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:00:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:00:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:00:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:00:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:00:28,520 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:00:28,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:00:28 BoogieIcfgContainer [2018-08-07 11:00:28,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:00:28,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:00:28,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:00:28,531 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:00:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:00:21" (1/3) ... [2018-08-07 11:00:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d797f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:00:28, skipping insertion in model container [2018-08-07 11:00:28,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:00:22" (2/3) ... [2018-08-07 11:00:28,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d797f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:00:28, skipping insertion in model container [2018-08-07 11:00:28,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:00:28" (3/3) ... [2018-08-07 11:00:28,540 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label14_true-unreach-call.c [2018-08-07 11:00:28,558 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:00:28,570 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:00:28,640 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:00:28,640 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:00:28,641 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:00:28,641 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:00:28,641 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:00:28,641 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:00:28,641 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:00:28,641 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:00:28,642 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:00:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-08-07 11:00:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-08-07 11:00:28,701 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:28,702 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:00:28,703 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash -594515452, now seen corresponding path program 1 times [2018-08-07 11:00:28,712 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:28,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:28,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:28,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:28,759 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:29,573 WARN L170 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:00:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:29,730 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:00:29,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:00:29,731 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:29,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:00:29,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:00:29,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:29,765 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-08-07 11:00:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:32,055 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-08-07 11:00:32,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:00:32,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2018-08-07 11:00:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:32,081 INFO L225 Difference]: With dead ends: 838 [2018-08-07 11:00:32,081 INFO L226 Difference]: Without dead ends: 524 [2018-08-07 11:00:32,088 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-08-07 11:00:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-08-07 11:00:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-08-07 11:00:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-08-07 11:00:32,191 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 177 [2018-08-07 11:00:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:32,193 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-08-07 11:00:32,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:00:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-08-07 11:00:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-08-07 11:00:32,200 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:32,200 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-08-07 11:00:32,201 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:32,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1749816701, now seen corresponding path program 1 times [2018-08-07 11:00:32,201 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:32,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:32,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:32,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:32,203 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:32,525 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:00:32,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 11:00:32,525 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:32,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:00:32,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:00:32,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 11:00:32,528 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-08-07 11:00:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:35,855 INFO L93 Difference]: Finished difference Result 1271 states and 2186 transitions. [2018-08-07 11:00:35,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:00:35,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-08-07 11:00:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:35,863 INFO L225 Difference]: With dead ends: 1271 [2018-08-07 11:00:35,864 INFO L226 Difference]: Without dead ends: 755 [2018-08-07 11:00:35,866 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:00:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2018-08-07 11:00:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 739. [2018-08-07 11:00:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-08-07 11:00:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1100 transitions. [2018-08-07 11:00:35,915 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1100 transitions. Word has length 187 [2018-08-07 11:00:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:35,916 INFO L480 AbstractCegarLoop]: Abstraction has 739 states and 1100 transitions. [2018-08-07 11:00:35,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:00:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1100 transitions. [2018-08-07 11:00:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-08-07 11:00:35,920 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:35,921 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-08-07 11:00:35,921 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1491408640, now seen corresponding path program 1 times [2018-08-07 11:00:35,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:35,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:35,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:35,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:35,923 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:36,265 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:00:36,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:00:36,265 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:36,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:00:36,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:00:36,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:36,270 INFO L87 Difference]: Start difference. First operand 739 states and 1100 transitions. Second operand 3 states. [2018-08-07 11:00:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:38,616 INFO L93 Difference]: Finished difference Result 2117 states and 3231 transitions. [2018-08-07 11:00:38,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:00:38,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-08-07 11:00:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:38,626 INFO L225 Difference]: With dead ends: 2117 [2018-08-07 11:00:38,626 INFO L226 Difference]: Without dead ends: 1384 [2018-08-07 11:00:38,629 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2018-08-07 11:00:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1382. [2018-08-07 11:00:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2018-08-07 11:00:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1971 transitions. [2018-08-07 11:00:38,675 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1971 transitions. Word has length 190 [2018-08-07 11:00:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:38,676 INFO L480 AbstractCegarLoop]: Abstraction has 1382 states and 1971 transitions. [2018-08-07 11:00:38,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:00:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1971 transitions. [2018-08-07 11:00:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-08-07 11:00:38,685 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:38,685 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-08-07 11:00:38,685 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1846348452, now seen corresponding path program 1 times [2018-08-07 11:00:38,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:38,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:38,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:38,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:38,688 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:38,981 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:00:38,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:00:38,982 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:38,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:00:38,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:00:38,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:38,983 INFO L87 Difference]: Start difference. First operand 1382 states and 1971 transitions. Second operand 3 states. [2018-08-07 11:00:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:40,740 INFO L93 Difference]: Finished difference Result 4039 states and 5932 transitions. [2018-08-07 11:00:40,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:00:40,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-08-07 11:00:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:40,764 INFO L225 Difference]: With dead ends: 4039 [2018-08-07 11:00:40,764 INFO L226 Difference]: Without dead ends: 2663 [2018-08-07 11:00:40,770 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:00:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2018-08-07 11:00:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2647. [2018-08-07 11:00:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2018-08-07 11:00:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3741 transitions. [2018-08-07 11:00:40,847 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3741 transitions. Word has length 192 [2018-08-07 11:00:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:40,847 INFO L480 AbstractCegarLoop]: Abstraction has 2647 states and 3741 transitions. [2018-08-07 11:00:40,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:00:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3741 transitions. [2018-08-07 11:00:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-08-07 11:00:40,857 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:40,858 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:00:40,858 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1299369719, now seen corresponding path program 1 times [2018-08-07 11:00:40,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:40,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:40,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:40,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:40,860 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:41,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:41,339 INFO L194 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 [2018-08-07 11:00:41,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:41,362 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:41,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-08-07 11:00:42,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:00:42,593 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:00:42,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-08-07 11:00:42,593 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:42,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:00:42,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:00:42,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:00:42,595 INFO L87 Difference]: Start difference. First operand 2647 states and 3741 transitions. Second operand 5 states. [2018-08-07 11:00:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:45,869 INFO L93 Difference]: Finished difference Result 8433 states and 12656 transitions. [2018-08-07 11:00:45,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:00:45,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-08-07 11:00:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:45,912 INFO L225 Difference]: With dead ends: 8433 [2018-08-07 11:00:45,912 INFO L226 Difference]: Without dead ends: 5792 [2018-08-07 11:00:45,932 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:00:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2018-08-07 11:00:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5708. [2018-08-07 11:00:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5708 states. [2018-08-07 11:00:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 8037 transitions. [2018-08-07 11:00:46,140 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 8037 transitions. Word has length 208 [2018-08-07 11:00:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:46,140 INFO L480 AbstractCegarLoop]: Abstraction has 5708 states and 8037 transitions. [2018-08-07 11:00:46,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:00:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 8037 transitions. [2018-08-07 11:00:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-08-07 11:00:46,160 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:46,160 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:00:46,161 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 415216045, now seen corresponding path program 1 times [2018-08-07 11:00:46,161 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:46,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:46,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:46,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:46,165 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:46,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:46,744 INFO L194 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 [2018-08-07 11:00:46,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:46,759 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:47,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:47,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:47,709 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:00:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:48,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:48,434 INFO L194 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 [2018-08-07 11:00:48,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:48,461 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:49,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:49,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:49,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:00:49,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-08-07 11:00:49,323 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:00:49,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:00:49,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:00:49,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:00:49,326 INFO L87 Difference]: Start difference. First operand 5708 states and 8037 transitions. Second operand 9 states. [2018-08-07 11:00:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:51,673 INFO L93 Difference]: Finished difference Result 11821 states and 17144 transitions. [2018-08-07 11:00:51,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:00:51,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2018-08-07 11:00:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:51,706 INFO L225 Difference]: With dead ends: 11821 [2018-08-07 11:00:51,706 INFO L226 Difference]: Without dead ends: 6119 [2018-08-07 11:00:51,734 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 831 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-08-07 11:00:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6119 states. [2018-08-07 11:00:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6119 to 6021. [2018-08-07 11:00:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6021 states. [2018-08-07 11:00:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 7901 transitions. [2018-08-07 11:00:51,913 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 7901 transitions. Word has length 210 [2018-08-07 11:00:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:51,913 INFO L480 AbstractCegarLoop]: Abstraction has 6021 states and 7901 transitions. [2018-08-07 11:00:51,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:00:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 7901 transitions. [2018-08-07 11:00:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-08-07 11:00:51,931 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:51,931 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:00:51,932 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash 523884446, now seen corresponding path program 1 times [2018-08-07 11:00:51,932 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:51,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:51,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:51,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:51,933 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:52,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:52,458 INFO L194 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 [2018-08-07 11:00:52,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:52,474 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:52,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:52,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:53,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:53,126 INFO L194 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 [2018-08-07 11:00:53,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:53,142 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:53,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:53,842 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:54,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:00:54,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-08-07 11:00:54,535 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:00:54,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:00:54,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:00:54,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:00:54,536 INFO L87 Difference]: Start difference. First operand 6021 states and 7901 transitions. Second operand 6 states. [2018-08-07 11:00:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:56,052 INFO L93 Difference]: Finished difference Result 11937 states and 15727 transitions. [2018-08-07 11:00:56,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-08-07 11:00:56,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-08-07 11:00:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:00:56,078 INFO L225 Difference]: With dead ends: 11937 [2018-08-07 11:00:56,079 INFO L226 Difference]: Without dead ends: 5922 [2018-08-07 11:00:56,093 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 856 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:00:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2018-08-07 11:00:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5922. [2018-08-07 11:00:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5922 states. [2018-08-07 11:00:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7630 transitions. [2018-08-07 11:00:56,217 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7630 transitions. Word has length 217 [2018-08-07 11:00:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:00:56,218 INFO L480 AbstractCegarLoop]: Abstraction has 5922 states and 7630 transitions. [2018-08-07 11:00:56,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:00:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7630 transitions. [2018-08-07 11:00:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-08-07 11:00:56,240 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:00:56,241 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:00:56,241 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:00:56,242 INFO L82 PathProgramCache]: Analyzing trace with hash 826145961, now seen corresponding path program 1 times [2018-08-07 11:00:56,242 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:00:56,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:56,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:56,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:00:56,243 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:00:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:56,823 WARN L170 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-08-07 11:00:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:00:56,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:00:56,904 INFO L194 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 [2018-08-07 11:00:56,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:00:56,912 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:00:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:00:57,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:00:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:00:57,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:00:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:00:57,473 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:00:57,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 11:00:57,473 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:00:57,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:00:57,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:00:57,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:00:57,474 INFO L87 Difference]: Start difference. First operand 5922 states and 7630 transitions. Second operand 3 states. [2018-08-07 11:00:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:00:59,991 INFO L93 Difference]: Finished difference Result 17197 states and 22410 transitions. [2018-08-07 11:00:59,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:00:59,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 282 [2018-08-07 11:00:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:00,032 INFO L225 Difference]: With dead ends: 17197 [2018-08-07 11:01:00,032 INFO L226 Difference]: Without dead ends: 11281 [2018-08-07 11:01:00,051 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 562 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:01:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2018-08-07 11:01:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 11277. [2018-08-07 11:01:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11277 states. [2018-08-07 11:01:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 14294 transitions. [2018-08-07 11:01:00,277 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 14294 transitions. Word has length 282 [2018-08-07 11:01:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:00,278 INFO L480 AbstractCegarLoop]: Abstraction has 11277 states and 14294 transitions. [2018-08-07 11:01:00,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:01:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 14294 transitions. [2018-08-07 11:01:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-08-07 11:01:00,324 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:00,325 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-08-07 11:01:00,325 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2100439510, now seen corresponding path program 1 times [2018-08-07 11:01:00,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:00,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:00,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:00,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:00,327 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 154 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:00,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:00,825 INFO L194 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 [2018-08-07 11:01:00,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:00,832 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:01,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-08-07 11:01:01,171 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-08-07 11:01:01,292 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:01:01,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-08-07 11:01:01,292 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:01:01,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:01:01,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:01:01,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:01:01,293 INFO L87 Difference]: Start difference. First operand 11277 states and 14294 transitions. Second operand 3 states. [2018-08-07 11:01:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:02,270 INFO L93 Difference]: Finished difference Result 22546 states and 28584 transitions. [2018-08-07 11:01:02,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:01:02,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2018-08-07 11:01:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:02,303 INFO L225 Difference]: With dead ends: 22546 [2018-08-07 11:01:02,303 INFO L226 Difference]: Without dead ends: 11275 [2018-08-07 11:01:02,320 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:01:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2018-08-07 11:01:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11275. [2018-08-07 11:01:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11275 states. [2018-08-07 11:01:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 14290 transitions. [2018-08-07 11:01:02,509 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 14290 transitions. Word has length 332 [2018-08-07 11:01:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:02,510 INFO L480 AbstractCegarLoop]: Abstraction has 11275 states and 14290 transitions. [2018-08-07 11:01:02,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:01:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 14290 transitions. [2018-08-07 11:01:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-08-07 11:01:02,552 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:02,553 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-08-07 11:01:02,553 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1452400975, now seen corresponding path program 1 times [2018-08-07 11:01:02,553 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:02,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:02,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:02,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:02,555 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:02,894 WARN L170 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:01:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 158 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:01:03,035 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:03,035 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:03,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:03,045 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:03,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-08-07 11:01:03,506 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 152 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-08-07 11:01:04,012 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:01:04,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2018-08-07 11:01:04,012 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:01:04,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:01:04,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:01:04,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:01:04,013 INFO L87 Difference]: Start difference. First operand 11275 states and 14290 transitions. Second operand 6 states. [2018-08-07 11:01:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:06,374 INFO L93 Difference]: Finished difference Result 23687 states and 31207 transitions. [2018-08-07 11:01:06,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:01:06,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2018-08-07 11:01:06,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:06,435 INFO L225 Difference]: With dead ends: 23687 [2018-08-07 11:01:06,435 INFO L226 Difference]: Without dead ends: 12240 [2018-08-07 11:01:06,471 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 672 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-08-07 11:01:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12240 states. [2018-08-07 11:01:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12240 to 11670. [2018-08-07 11:01:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11670 states. [2018-08-07 11:01:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 14721 transitions. [2018-08-07 11:01:06,762 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 14721 transitions. Word has length 340 [2018-08-07 11:01:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:06,762 INFO L480 AbstractCegarLoop]: Abstraction has 11670 states and 14721 transitions. [2018-08-07 11:01:06,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:01:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 14721 transitions. [2018-08-07 11:01:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-08-07 11:01:06,790 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:06,790 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-08-07 11:01:06,791 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:06,791 INFO L82 PathProgramCache]: Analyzing trace with hash 539656482, now seen corresponding path program 1 times [2018-08-07 11:01:06,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:06,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:06,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:06,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:06,792 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 156 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-08-07 11:01:07,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:07,614 INFO L194 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) [2018-08-07 11:01:07,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:07,625 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:07,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-08-07 11:01:08,035 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 156 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-08-07 11:01:08,279 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:01:08,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 11:01:08,280 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:01:08,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:01:08,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:01:08,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:01:08,281 INFO L87 Difference]: Start difference. First operand 11670 states and 14721 transitions. Second operand 5 states. [2018-08-07 11:01:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:10,460 INFO L93 Difference]: Finished difference Result 23633 states and 30181 transitions. [2018-08-07 11:01:10,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:01:10,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2018-08-07 11:01:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:10,490 INFO L225 Difference]: With dead ends: 23633 [2018-08-07 11:01:10,491 INFO L226 Difference]: Without dead ends: 11969 [2018-08-07 11:01:10,510 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 679 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:01:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11969 states. [2018-08-07 11:01:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11969 to 11791. [2018-08-07 11:01:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11791 states. [2018-08-07 11:01:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11791 states to 11791 states and 14560 transitions. [2018-08-07 11:01:10,748 INFO L78 Accepts]: Start accepts. Automaton has 11791 states and 14560 transitions. Word has length 342 [2018-08-07 11:01:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:10,748 INFO L480 AbstractCegarLoop]: Abstraction has 11791 states and 14560 transitions. [2018-08-07 11:01:10,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:01:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 11791 states and 14560 transitions. [2018-08-07 11:01:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-08-07 11:01:10,777 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:10,778 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-08-07 11:01:10,778 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1377682562, now seen corresponding path program 1 times [2018-08-07 11:01:10,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:10,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:10,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:10,780 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-08-07 11:01:11,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:11,179 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:11,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:11,190 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:11,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-08-07 11:01:11,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-08-07 11:01:12,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:12,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:01:12,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:12,603 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:13,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-08-07 11:01:13,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-08-07 11:01:13,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:01:13,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-08-07 11:01:13,727 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:01:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:01:13,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:01:13,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:01:13,728 INFO L87 Difference]: Start difference. First operand 11791 states and 14560 transitions. Second operand 9 states. [2018-08-07 11:01:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:17,651 INFO L93 Difference]: Finished difference Result 27289 states and 34906 transitions. [2018-08-07 11:01:17,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-08-07 11:01:17,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2018-08-07 11:01:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:17,696 INFO L225 Difference]: With dead ends: 27289 [2018-08-07 11:01:17,696 INFO L226 Difference]: Without dead ends: 15321 [2018-08-07 11:01:17,719 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1428 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-08-07 11:01:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15321 states. [2018-08-07 11:01:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15321 to 15263. [2018-08-07 11:01:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15263 states. [2018-08-07 11:01:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15263 states to 15263 states and 19197 transitions. [2018-08-07 11:01:18,065 INFO L78 Accepts]: Start accepts. Automaton has 15263 states and 19197 transitions. Word has length 357 [2018-08-07 11:01:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:18,067 INFO L480 AbstractCegarLoop]: Abstraction has 15263 states and 19197 transitions. [2018-08-07 11:01:18,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:01:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 15263 states and 19197 transitions. [2018-08-07 11:01:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-08-07 11:01:18,114 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:18,114 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:01:18,115 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1536553133, now seen corresponding path program 1 times [2018-08-07 11:01:18,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:18,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:18,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:18,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:18,116 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:18,544 WARN L170 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:01:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 181 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:01:18,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:18,936 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:18,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:18,946 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:19,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:19,353 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 197 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:19,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:19,512 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:01:19,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:19,528 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:20,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-08-07 11:01:20,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:20,850 WARN L170 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:01:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 183 proven. 75 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-08-07 11:01:21,061 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 11:01:21,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5, 5, 5] total 21 [2018-08-07 11:01:21,062 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:01:21,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:01:21,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:01:21,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-08-07 11:01:21,065 INFO L87 Difference]: Start difference. First operand 15263 states and 19197 transitions. Second operand 5 states. [2018-08-07 11:01:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:21,867 INFO L93 Difference]: Finished difference Result 45295 states and 58983 transitions. [2018-08-07 11:01:21,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:01:21,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2018-08-07 11:01:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:21,961 INFO L225 Difference]: With dead ends: 45295 [2018-08-07 11:01:21,961 INFO L226 Difference]: Without dead ends: 30078 [2018-08-07 11:01:21,994 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1432 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-08-07 11:01:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2018-08-07 11:01:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 29536. [2018-08-07 11:01:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29536 states. [2018-08-07 11:01:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29536 states to 29536 states and 37085 transitions. [2018-08-07 11:01:22,742 INFO L78 Accepts]: Start accepts. Automaton has 29536 states and 37085 transitions. Word has length 361 [2018-08-07 11:01:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:22,743 INFO L480 AbstractCegarLoop]: Abstraction has 29536 states and 37085 transitions. [2018-08-07 11:01:22,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:01:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 29536 states and 37085 transitions. [2018-08-07 11:01:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-08-07 11:01:22,822 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:22,822 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:01:22,823 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1388191774, now seen corresponding path program 1 times [2018-08-07 11:01:22,823 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:22,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:22,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:22,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:22,824 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 258 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-08-07 11:01:23,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:23,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:23,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:23,530 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:23,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-08-07 11:01:24,405 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-08-07 11:01:24,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:24,787 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:01:24,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:24,802 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:25,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-08-07 11:01:25,759 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-08-07 11:01:25,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:01:25,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-08-07 11:01:25,917 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:01:25,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:01:25,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:01:25,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:01:25,919 INFO L87 Difference]: Start difference. First operand 29536 states and 37085 transitions. Second operand 9 states. [2018-08-07 11:01:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:37,586 INFO L93 Difference]: Finished difference Result 192043 states and 282934 transitions. [2018-08-07 11:01:37,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-08-07 11:01:37,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 362 [2018-08-07 11:01:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:38,443 INFO L225 Difference]: With dead ends: 192043 [2018-08-07 11:01:38,443 INFO L226 Difference]: Without dead ends: 162513 [2018-08-07 11:01:38,650 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1453 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=276, Invalid=1206, Unknown=0, NotChecked=0, Total=1482 [2018-08-07 11:01:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162513 states. [2018-08-07 11:01:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162513 to 150574. [2018-08-07 11:01:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150574 states. [2018-08-07 11:01:43,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150574 states to 150574 states and 192081 transitions. [2018-08-07 11:01:43,371 INFO L78 Accepts]: Start accepts. Automaton has 150574 states and 192081 transitions. Word has length 362 [2018-08-07 11:01:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:43,372 INFO L480 AbstractCegarLoop]: Abstraction has 150574 states and 192081 transitions. [2018-08-07 11:01:43,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:01:43,372 INFO L276 IsEmpty]: Start isEmpty. Operand 150574 states and 192081 transitions. [2018-08-07 11:01:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-08-07 11:01:43,630 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:01:43,631 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:01:43,631 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:01:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash 933587522, now seen corresponding path program 1 times [2018-08-07 11:01:43,631 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:01:43,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:43,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:43,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:01:43,632 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:01:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:44,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:44,255 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:01:44,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:44,274 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:44,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:44,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:44,778 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:01:44,778 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:01:44,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:01:44,793 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:01:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:01:45,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:01:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:45,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:01:46,603 WARN L170 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-08-07 11:01:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-08-07 11:01:46,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:01:46,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 7 [2018-08-07 11:01:46,706 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:01:46,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:01:46,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:01:46,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:01:46,708 INFO L87 Difference]: Start difference. First operand 150574 states and 192081 transitions. Second operand 6 states. [2018-08-07 11:01:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:01:53,539 INFO L93 Difference]: Finished difference Result 314185 states and 424403 transitions. [2018-08-07 11:01:53,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:01:53,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 364 [2018-08-07 11:01:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:01:53,540 INFO L225 Difference]: With dead ends: 314185 [2018-08-07 11:01:53,540 INFO L226 Difference]: Without dead ends: 0 [2018-08-07 11:01:55,196 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1458 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:01:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-08-07 11:01:55,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-08-07 11:01:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-08-07 11:01:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-08-07 11:01:55,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 364 [2018-08-07 11:01:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:01:55,200 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-08-07 11:01:55,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:01:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-08-07 11:01:55,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-08-07 11:01:55,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-08-07 11:01:59,697 WARN L170 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-08-07 11:02:02,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,270 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,480 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:02,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,295 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:03,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,718 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:04,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,152 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:05,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:06,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:06,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:06,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:06,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:07,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:08,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:09,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:10,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:10,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:10,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:11,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:11,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:11,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:11,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:12,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:12,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:13,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:13,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:13,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:14,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:14,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:14,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:14,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:15,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:15,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:17,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:17,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:17,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:17,917 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:18,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:18,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:18,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:19,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:21,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:21,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:21,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:22,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:22,486 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:22,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:22,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:23,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:24,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:24,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:25,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:25,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:25,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:26,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:27,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:27,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:28,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:28,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:29,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:29,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:29,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:30,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:30,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:30,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:31,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:31,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:31,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:32,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:32,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:33,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:33,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:34,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:35,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:36,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:36,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:37,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:39,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:40,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:42,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:42,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:43,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:43,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:43,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:43,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:43,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:44,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:44,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:45,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:45,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:45,955 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:46,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:46,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:47,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:47,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:47,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:49,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:49,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:50,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:50,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:52,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:54,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:54,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:54,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:56,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:59,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:59,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:59,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:02:59,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:00,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:01,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:01,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:03,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:04,220 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:04,221 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:06,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:06,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:06,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:07,741 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:07,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:07,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:07,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:07,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:08,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:09,612 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:09,789 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:10,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:10,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:11,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:11,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:11,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:11,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:11,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:12,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:13,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:13,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:13,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:13,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:14,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:14,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:14,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:15,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:15,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:15,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:15,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:16,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:16,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:17,573 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:18,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:19,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:20,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:20,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:21,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:21,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:22,486 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:22,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:24,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:24,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:26,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:26,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:26,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:26,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:26,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:27,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:28,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:29,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:29,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:31,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:32,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:34,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:34,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:34,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:35,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:37,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:38,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:38,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:41,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:42,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:42,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:42,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:43,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:43,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:44,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:45,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:46,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:47,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:48,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:48,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:48,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:49,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:49,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:49,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:50,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:51,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:52,485 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:52,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:52,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:53,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:53,786 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:54,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:54,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:55,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:55,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:56,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:56,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:57,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:57,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:58,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:58,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:58,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:03:58,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:06,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:06,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:07,785 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:10,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:13,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:13,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:14,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:15,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:16,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:16,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:19,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:19,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:04:20,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-08-07 11:04:21,340 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-08-07 11:04:21,341 INFO L168 Benchmark]: Toolchain (without parser) took 240052.42 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -728.2 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,342 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-08-07 11:04:21,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1129.21 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.32 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,344 INFO L168 Benchmark]: Boogie Preprocessor took 382.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -954.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,345 INFO L168 Benchmark]: RCFGBuilder took 5562.13 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: 284.2 MB). Peak memory consumption was 284.2 MB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,346 INFO L168 Benchmark]: TraceAbstraction took 232818.31 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -164.0 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-08-07 11:04:21,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1129.21 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 155.32 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 382.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -954.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5562.13 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: 284.2 MB). Peak memory consumption was 284.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232818.31 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -164.0 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1545]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 5313. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-04-21-367.csv Completed graceful shutdown