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/Problem15_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:50:07,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:50:07,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:50:07,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:50:07,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:50:07,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:50:07,505 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:50:07,507 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:50:07,510 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:50:07,515 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:50:07,516 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:50:07,516 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:50:07,517 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:50:07,518 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:50:07,522 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:50:07,523 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:50:07,524 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:50:07,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:50:07,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:50:07,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:50:07,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:50:07,536 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:50:07,542 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:50:07,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:50:07,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:50:07,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:50:07,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:50:07,546 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:50:07,547 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:50:07,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:50:07,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:50:07,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:50:07,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:50:07,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:50:07,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:50:07,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:50:07,559 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 12:50:07,579 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:50:07,579 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:50:07,580 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:50:07,581 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:50:07,581 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:50:07,581 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:50:07,581 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:50:07,581 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:50:07,581 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:50:07,582 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:50:07,582 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:50:07,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:50:07,583 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:50:07,583 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:50:07,583 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:50:07,583 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:50:07,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:50:07,584 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:50:07,584 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:50:07,584 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:50:07,584 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:50:07,584 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:50:07,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:50:07,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:50:07,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:50:07,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:50:07,586 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:50:07,587 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:50:07,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:50:07,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:50:07,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:50:07,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:50:07,669 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:50:07,670 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-08-07 12:50:08,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c383bc6e3/1758ec1dc1ac483781d51e36372eed46/FLAG1d60448c1 [2018-08-07 12:50:08,398 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:50:08,399 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-08-07 12:50:08,423 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c383bc6e3/1758ec1dc1ac483781d51e36372eed46/FLAG1d60448c1 [2018-08-07 12:50:08,446 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c383bc6e3/1758ec1dc1ac483781d51e36372eed46 [2018-08-07 12:50:08,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:50:08,457 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:50:08,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:50:08,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:50:08,465 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:50:08,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:50:08" (1/1) ... [2018-08-07 12:50:08,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@499bc742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:08, skipping insertion in model container [2018-08-07 12:50:08,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:50:08" (1/1) ... [2018-08-07 12:50:08,690 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:50:09,243 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:50:09,259 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:50:09,554 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:50:09,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09 WrapperNode [2018-08-07 12:50:09,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:50:09,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:50:09,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:50:09,705 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:50:09,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:09,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:09,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:50:09,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:50:09,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:50:09,957 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:50:10,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (1/1) ... [2018-08-07 12:50:10,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:50:10,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:50:10,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:50:10,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:50:10,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (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 12:50:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:50:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:50:10,676 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 12:50:10,676 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 12:50:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:50:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:50:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:50:10,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:50:10,677 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_output2 [2018-08-07 12:50:10,677 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_output2 [2018-08-07 12:50:18,857 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:50:18,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:50:18 BoogieIcfgContainer [2018-08-07 12:50:18,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:50:18,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:50:18,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:50:18,863 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:50:18,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:50:08" (1/3) ... [2018-08-07 12:50:18,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e80756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:50:18, skipping insertion in model container [2018-08-07 12:50:18,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:50:09" (2/3) ... [2018-08-07 12:50:18,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e80756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:50:18, skipping insertion in model container [2018-08-07 12:50:18,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:50:18" (3/3) ... [2018-08-07 12:50:18,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label53_true-unreach-call.c [2018-08-07 12:50:18,882 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:50:18,894 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:50:18,957 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:50:18,958 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:50:18,959 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:50:18,959 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:50:18,959 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:50:18,959 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:50:18,959 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:50:18,959 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:50:18,960 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:50:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-08-07 12:50:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-08-07 12:50:19,012 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:50:19,013 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] [2018-08-07 12:50:19,014 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 12:50:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -423970076, now seen corresponding path program 1 times [2018-08-07 12:50:19,022 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:50:19,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:19,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:19,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:19,068 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:50:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:19,585 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 12:50:19,588 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:50:19,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:50:19,589 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:50:19,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:50:19,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:50:19,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:50:19,615 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-08-07 12:50:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:50:27,124 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-08-07 12:50:27,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:50:27,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-08-07 12:50:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:50:27,151 INFO L225 Difference]: With dead ends: 1501 [2018-08-07 12:50:27,151 INFO L226 Difference]: Without dead ends: 1057 [2018-08-07 12:50:27,162 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:50:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-08-07 12:50:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-08-07 12:50:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-08-07 12:50:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-08-07 12:50:27,270 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 54 [2018-08-07 12:50:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:50:27,271 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-08-07 12:50:27,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:50:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-08-07 12:50:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-08-07 12:50:27,278 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:50:27,279 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:50:27,279 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 12:50:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1183763439, now seen corresponding path program 1 times [2018-08-07 12:50:27,280 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:50:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:27,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:27,282 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:50:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:50:27,559 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:50:27,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:50:27,560 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:50:27,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:50:27,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:50:27,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:50:27,563 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-08-07 12:50:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:50:34,118 INFO L93 Difference]: Finished difference Result 2729 states and 4237 transitions. [2018-08-07 12:50:34,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:50:34,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-08-07 12:50:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:50:34,135 INFO L225 Difference]: With dead ends: 2729 [2018-08-07 12:50:34,135 INFO L226 Difference]: Without dead ends: 1991 [2018-08-07 12:50:34,141 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:50:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2018-08-07 12:50:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1989. [2018-08-07 12:50:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-08-07 12:50:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2772 transitions. [2018-08-07 12:50:34,224 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2772 transitions. Word has length 124 [2018-08-07 12:50:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:50:34,225 INFO L480 AbstractCegarLoop]: Abstraction has 1989 states and 2772 transitions. [2018-08-07 12:50:34,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:50:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2772 transitions. [2018-08-07 12:50:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-08-07 12:50:34,243 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:50:34,243 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:34,244 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 12:50:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1990466053, now seen corresponding path program 1 times [2018-08-07 12:50:34,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:50:34,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:34,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:34,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:34,248 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:50:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 97 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-08-07 12:50:35,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:50:35,266 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 12:50:35,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:35,343 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:50:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:35,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:50:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-08-07 12:50:35,727 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:50:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-08-07 12:50:35,988 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 12:50:35,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 12:50:35,989 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:50:35,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:50:35,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:50:35,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:50:35,993 INFO L87 Difference]: Start difference. First operand 1989 states and 2772 transitions. Second operand 3 states. [2018-08-07 12:50:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:50:41,418 INFO L93 Difference]: Finished difference Result 4279 states and 6109 transitions. [2018-08-07 12:50:41,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:50:41,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-08-07 12:50:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:50:41,444 INFO L225 Difference]: With dead ends: 4279 [2018-08-07 12:50:41,445 INFO L226 Difference]: Without dead ends: 2296 [2018-08-07 12:50:41,453 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 618 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:50:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2018-08-07 12:50:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2296. [2018-08-07 12:50:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2018-08-07 12:50:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3334 transitions. [2018-08-07 12:50:41,533 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3334 transitions. Word has length 308 [2018-08-07 12:50:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:50:41,534 INFO L480 AbstractCegarLoop]: Abstraction has 2296 states and 3334 transitions. [2018-08-07 12:50:41,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:50:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3334 transitions. [2018-08-07 12:50:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-08-07 12:50:41,541 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:50:41,541 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 12:50:41,542 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 12:50:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1930966903, now seen corresponding path program 1 times [2018-08-07 12:50:41,542 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:50:41,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:41,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:41,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:41,547 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:50:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 149 proven. 222 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-08-07 12:50:42,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:50:42,357 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 12:50:42,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:42,376 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:50:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:42,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:50:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-08-07 12:50:42,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:50:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 149 proven. 151 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:50:43,417 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:50:43,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 12:50:43,418 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:50:43,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:50:43,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:50:43,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:50:43,420 INFO L87 Difference]: Start difference. First operand 2296 states and 3334 transitions. Second operand 5 states. [2018-08-07 12:50:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:50:50,711 INFO L93 Difference]: Finished difference Result 6541 states and 9487 transitions. [2018-08-07 12:50:50,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:50:50,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2018-08-07 12:50:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:50:50,740 INFO L225 Difference]: With dead ends: 6541 [2018-08-07 12:50:50,740 INFO L226 Difference]: Without dead ends: 4251 [2018-08-07 12:50:50,752 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:50:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2018-08-07 12:50:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4222. [2018-08-07 12:50:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4222 states. [2018-08-07 12:50:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 5533 transitions. [2018-08-07 12:50:50,869 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 5533 transitions. Word has length 311 [2018-08-07 12:50:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:50:50,870 INFO L480 AbstractCegarLoop]: Abstraction has 4222 states and 5533 transitions. [2018-08-07 12:50:50,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:50:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 5533 transitions. [2018-08-07 12:50:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-08-07 12:50:50,877 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:50:50,878 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:50:50,878 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 12:50:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -302560301, now seen corresponding path program 1 times [2018-08-07 12:50:50,878 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:50:50,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:50,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:50,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:50:50,880 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:50:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-08-07 12:50:51,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:50:51,340 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:50:51,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:50:51,352 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:50:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:50:51,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:50:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 12:50:51,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:50:52,106 WARN L170 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-08-07 12:50:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 94 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:50:53,014 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:50:53,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-08-07 12:50:53,015 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:50:53,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:50:53,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:50:53,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:50:53,016 INFO L87 Difference]: Start difference. First operand 4222 states and 5533 transitions. Second operand 5 states. [2018-08-07 12:51:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:51:08,668 INFO L93 Difference]: Finished difference Result 11028 states and 14717 transitions. [2018-08-07 12:51:08,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:51:08,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2018-08-07 12:51:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:51:08,713 INFO L225 Difference]: With dead ends: 11028 [2018-08-07 12:51:08,713 INFO L226 Difference]: Without dead ends: 6812 [2018-08-07 12:51:08,737 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 670 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-08-07 12:51:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states. [2018-08-07 12:51:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6812 to 6742. [2018-08-07 12:51:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6742 states. [2018-08-07 12:51:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6742 states to 6742 states and 8847 transitions. [2018-08-07 12:51:08,922 INFO L78 Accepts]: Start accepts. Automaton has 6742 states and 8847 transitions. Word has length 336 [2018-08-07 12:51:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:51:08,923 INFO L480 AbstractCegarLoop]: Abstraction has 6742 states and 8847 transitions. [2018-08-07 12:51:08,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:51:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6742 states and 8847 transitions. [2018-08-07 12:51:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-08-07 12:51:08,934 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:51:08,934 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:08,934 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 12:51:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash 387932476, now seen corresponding path program 1 times [2018-08-07 12:51:08,935 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:51:08,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:51:08,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:08,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:51:08,936 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:51:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-08-07 12:51:09,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:51:09,562 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 12:51:09,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:09,574 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:51:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:09,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:51:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:51:09,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:51:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:51:10,427 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:51:10,427 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 12:51:10,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:10,445 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:51:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:10,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:51:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:51:11,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:51:12,088 WARN L170 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-08-07 12:51:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:51:12,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:51:12,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 7, 5] total 19 [2018-08-07 12:51:12,422 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:51:12,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-07 12:51:12,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-07 12:51:12,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-08-07 12:51:12,424 INFO L87 Difference]: Start difference. First operand 6742 states and 8847 transitions. Second operand 10 states. [2018-08-07 12:51:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:51:40,055 INFO L93 Difference]: Finished difference Result 33544 states and 46731 transitions. [2018-08-07 12:51:40,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-08-07 12:51:40,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 410 [2018-08-07 12:51:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:51:40,154 INFO L225 Difference]: With dead ends: 33544 [2018-08-07 12:51:40,154 INFO L226 Difference]: Without dead ends: 27116 [2018-08-07 12:51:40,224 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1707 GetRequests, 1647 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=694, Invalid=2846, Unknown=0, NotChecked=0, Total=3540 [2018-08-07 12:51:40,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27116 states. [2018-08-07 12:51:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27116 to 26361. [2018-08-07 12:51:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26361 states. [2018-08-07 12:51:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26361 states to 26361 states and 34328 transitions. [2018-08-07 12:51:40,832 INFO L78 Accepts]: Start accepts. Automaton has 26361 states and 34328 transitions. Word has length 410 [2018-08-07 12:51:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:51:40,834 INFO L480 AbstractCegarLoop]: Abstraction has 26361 states and 34328 transitions. [2018-08-07 12:51:40,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-07 12:51:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26361 states and 34328 transitions. [2018-08-07 12:51:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-08-07 12:51:40,863 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:51:40,864 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:40,864 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 12:51:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash 130403903, now seen corresponding path program 1 times [2018-08-07 12:51:40,865 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:51:40,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:51:40,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:40,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:51:40,866 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:51:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:42,060 WARN L170 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-08-07 12:51:42,509 WARN L170 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-08-07 12:51:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 292 proven. 339 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-08-07 12:51:43,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:51:43,396 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 12:51:43,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:43,403 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:51:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:43,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:51:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 504 proven. 41 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-08-07 12:51:44,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:51:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 203 proven. 428 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-08-07 12:51:45,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:51:45,091 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:51:45,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:51:45,108 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:51:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:51:45,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:51:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 454 proven. 41 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-08-07 12:51:46,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:51:46,600 WARN L170 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-08-07 12:51:46,735 WARN L170 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-08-07 12:51:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 203 proven. 428 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (8)] Exception during sending of exit command (exit): Broken pipe [2018-08-07 12:51:47,523 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:51:47,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-08-07 12:51:47,524 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:51:47,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-08-07 12:51:47,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-08-07 12:51:47,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-08-07 12:51:47,525 INFO L87 Difference]: Start difference. First operand 26361 states and 34328 transitions. Second operand 13 states. [2018-08-07 12:52:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:52:20,312 INFO L93 Difference]: Finished difference Result 76081 states and 102467 transitions. [2018-08-07 12:52:20,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-08-07 12:52:20,312 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 531 [2018-08-07 12:52:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:52:20,475 INFO L225 Difference]: With dead ends: 76081 [2018-08-07 12:52:20,475 INFO L226 Difference]: Without dead ends: 47013 [2018-08-07 12:52:20,567 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 2181 GetRequests, 2134 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=511, Invalid=1651, Unknown=0, NotChecked=0, Total=2162 [2018-08-07 12:52:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47013 states. [2018-08-07 12:52:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47013 to 45458. [2018-08-07 12:52:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45458 states. [2018-08-07 12:52:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45458 states to 45458 states and 59164 transitions. [2018-08-07 12:52:21,430 INFO L78 Accepts]: Start accepts. Automaton has 45458 states and 59164 transitions. Word has length 531 [2018-08-07 12:52:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:52:21,431 INFO L480 AbstractCegarLoop]: Abstraction has 45458 states and 59164 transitions. [2018-08-07 12:52:21,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-08-07 12:52:21,431 INFO L276 IsEmpty]: Start isEmpty. Operand 45458 states and 59164 transitions. [2018-08-07 12:52:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-08-07 12:52:21,468 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:52:21,469 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:52:21,469 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 12:52:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1591791313, now seen corresponding path program 1 times [2018-08-07 12:52:21,470 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:52:21,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:52:21,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:52:21,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:52:21,471 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:52:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:52:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:22,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:52:22,279 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 12:52:22,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:52:22,294 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:52:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:52:22,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:52:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:22,661 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:52:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:23,242 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:52:23,242 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:52:23,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:52:23,258 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:52:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:52:23,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:52:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:23,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:52:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:24,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:52:24,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-08-07 12:52:24,569 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:52:24,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:52:24,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:52:24,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:52:24,571 INFO L87 Difference]: Start difference. First operand 45458 states and 59164 transitions. Second operand 9 states. [2018-08-07 12:52:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:52:37,203 INFO L93 Difference]: Finished difference Result 95760 states and 136566 transitions. [2018-08-07 12:52:37,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-08-07 12:52:37,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 541 [2018-08-07 12:52:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:52:37,448 INFO L225 Difference]: With dead ends: 95760 [2018-08-07 12:52:37,449 INFO L226 Difference]: Without dead ends: 50616 [2018-08-07 12:52:37,610 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 2186 GetRequests, 2164 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-08-07 12:52:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50616 states. [2018-08-07 12:52:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50616 to 48789. [2018-08-07 12:52:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48789 states. [2018-08-07 12:52:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48789 states to 48789 states and 64902 transitions. [2018-08-07 12:52:38,699 INFO L78 Accepts]: Start accepts. Automaton has 48789 states and 64902 transitions. Word has length 541 [2018-08-07 12:52:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:52:38,700 INFO L480 AbstractCegarLoop]: Abstraction has 48789 states and 64902 transitions. [2018-08-07 12:52:38,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:52:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 48789 states and 64902 transitions. [2018-08-07 12:52:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-08-07 12:52:38,733 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:52:38,733 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:52:38,734 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 12:52:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 700406421, now seen corresponding path program 1 times [2018-08-07 12:52:38,734 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:52:38,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:52:38,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:52:38,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:52:38,735 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:52:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:52:39,149 WARN L170 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-08-07 12:52:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 409 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-08-07 12:52:39,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:52:39,437 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 12:52:39,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:52:39,447 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:52:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:52:39,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:52:39,995 WARN L170 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 398 DAG size of output: 19 [2018-08-07 12:52:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2018-08-07 12:52:40,343 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:52:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2018-08-07 12:52:40,957 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 12:52:40,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-08-07 12:52:40,958 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:52:40,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:52:40,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:52:40,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:52:40,960 INFO L87 Difference]: Start difference. First operand 48789 states and 64902 transitions. Second operand 3 states. [2018-08-07 12:53:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:53:37,026 INFO L93 Difference]: Finished difference Result 111154 states and 151657 transitions. [2018-08-07 12:53:37,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:53:37,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 596 [2018-08-07 12:53:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:53:37,302 INFO L225 Difference]: With dead ends: 111154 [2018-08-07 12:53:37,302 INFO L226 Difference]: Without dead ends: 62679 [2018-08-07 12:53:37,478 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1190 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:53:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62679 states. [2018-08-07 12:53:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62679 to 62441. [2018-08-07 12:53:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62441 states. [2018-08-07 12:53:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62441 states to 62441 states and 83459 transitions. [2018-08-07 12:53:38,814 INFO L78 Accepts]: Start accepts. Automaton has 62441 states and 83459 transitions. Word has length 596 [2018-08-07 12:53:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:53:38,815 INFO L480 AbstractCegarLoop]: Abstraction has 62441 states and 83459 transitions. [2018-08-07 12:53:38,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:53:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 62441 states and 83459 transitions. [2018-08-07 12:53:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2018-08-07 12:53:38,836 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:53:38,837 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:53:38,837 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 12:53:38,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1452698061, now seen corresponding path program 1 times [2018-08-07 12:53:38,838 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:53:38,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:53:38,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:53:38,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:53:38,839 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:53:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:53:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-08-07 12:53:39,693 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:53:39,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:53:39,694 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:53:39,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:53:39,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:53:39,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:53:39,695 INFO L87 Difference]: Start difference. First operand 62441 states and 83459 transitions. Second operand 3 states. [2018-08-07 12:53:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:53:43,783 INFO L93 Difference]: Finished difference Result 147377 states and 207042 transitions. [2018-08-07 12:53:43,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:53:43,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 607 [2018-08-07 12:53:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:53:44,050 INFO L225 Difference]: With dead ends: 147377 [2018-08-07 12:53:44,050 INFO L226 Difference]: Without dead ends: 68198 [2018-08-07 12:53:44,396 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:53:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68198 states. [2018-08-07 12:53:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68198 to 63959. [2018-08-07 12:53:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63959 states. [2018-08-07 12:53:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63959 states to 63959 states and 78551 transitions. [2018-08-07 12:53:45,860 INFO L78 Accepts]: Start accepts. Automaton has 63959 states and 78551 transitions. Word has length 607 [2018-08-07 12:53:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:53:45,861 INFO L480 AbstractCegarLoop]: Abstraction has 63959 states and 78551 transitions. [2018-08-07 12:53:45,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:53:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 63959 states and 78551 transitions. [2018-08-07 12:53:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-08-07 12:53:45,955 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:53:45,956 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:53:45,956 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 12:53:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash 865078468, now seen corresponding path program 1 times [2018-08-07 12:53:45,957 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:53:45,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:53:45,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:53:45,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:53:45,958 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:53:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:53:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 494 proven. 79 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2018-08-07 12:53:47,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:53:47,237 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:53:47,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:53:47,246 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:53:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:53:47,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:53:48,096 WARN L170 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 424 DAG size of output: 25 [2018-08-07 12:53:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 616 proven. 2 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-08-07 12:53:48,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:53:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 616 proven. 2 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-08-07 12:53:49,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:53:49,511 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:53:49,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:53:49,527 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:53:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:53:50,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:53:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 616 proven. 2 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-08-07 12:53:50,756 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:53:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 616 proven. 2 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-08-07 12:53:51,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:53:51,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-08-07 12:53:51,684 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:53:51,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-08-07 12:53:51,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-08-07 12:53:51,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:53:51,687 INFO L87 Difference]: Start difference. First operand 63959 states and 78551 transitions. Second operand 8 states. Received shutdown request... [2018-08-07 12:54:13,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-08-07 12:54:13,151 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:54:13,156 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:54:13,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:54:13 BoogieIcfgContainer [2018-08-07 12:54:13,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:54:13,157 INFO L168 Benchmark]: Toolchain (without parser) took 244701.45 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -304.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,158 INFO L168 Benchmark]: CDTParser took 0.21 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 12:54:13,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1245.75 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,160 INFO L168 Benchmark]: Boogie Preprocessor took 645.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 892.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,161 INFO L168 Benchmark]: RCFGBuilder took 8255.66 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: 313.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,161 INFO L168 Benchmark]: TraceAbstraction took 234297.16 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 266.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-08-07 12:54:13,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1245.75 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 251.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 645.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 892.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8255.66 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: 313.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234297.16 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 266.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (63959states) and FLOYD_HOARE automaton (currently 22 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (37355 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 234.2s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 199.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2913 SDtfs, 20942 SDslu, 3408 SDs, 0 SdLazy, 42909 SolverSat, 8507 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 178.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12943 GetRequests, 12744 SyntacticMatches, 15 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63959occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 9028 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 11096 NumberOfCodeBlocks, 11096 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 17418 ConstructedInterpolants, 64 QuantifiedInterpolants, 33788970 SizeOfPredicates, 34 NumberOfNonLiveVariables, 9070 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 16385/18554 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-54-13-182.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label53_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-54-13-182.csv Completed graceful shutdown