java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:04:57,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:04:57,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:04:57,522 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:04:57,522 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:04:57,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:04:57,525 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:04:57,526 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:04:57,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:04:57,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:04:57,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:04:57,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:04:57,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:04:57,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:04:57,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:04:57,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:04:57,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:04:57,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:04:57,539 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:04:57,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:04:57,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:04:57,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:04:57,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 11:04:57,546 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 11:04:57,546 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 11:04:57,547 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 11:04:57,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 11:04:57,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 11:04:57,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 11:04:57,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 11:04:57,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 11:04:57,552 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 11:04:57,553 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:04:57,553 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:04:57,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:04:57,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:04:57,555 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 11:04:57,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:04:57,571 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:04:57,572 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:04:57,572 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:04:57,572 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:04:57,572 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:04:57,572 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:04:57,573 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:04:57,573 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:04:57,573 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:04:57,573 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:04:57,574 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:04:57,574 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:04:57,574 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:04:57,575 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:04:57,575 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:04:57,575 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:04:57,575 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:04:57,575 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:04:57,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:04:57,576 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:04:57,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:04:57,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:04:57,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:04:57,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:04:57,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:04:57,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:04:57,577 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:04:57,578 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:04:57,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:04:57,578 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:04:57,578 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:04:57,579 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:04:57,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:04:57,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:04:57,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:04:57,670 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:04:57,671 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:04:57,672 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-08-07 11:04:58,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0783f46e/d017a6670236437f9a8f5c2b6cc71274/FLAG2a5e332d1 [2018-08-07 11:04:58,410 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:04:58,411 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-08-07 11:04:58,438 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0783f46e/d017a6670236437f9a8f5c2b6cc71274/FLAG2a5e332d1 [2018-08-07 11:04:58,459 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0783f46e/d017a6670236437f9a8f5c2b6cc71274 [2018-08-07 11:04:58,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:04:58,472 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:04:58,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:04:58,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:04:58,481 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:04:58,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:04:58" (1/1) ... [2018-08-07 11:04:58,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e68ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:58, skipping insertion in model container [2018-08-07 11:04:58,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:04:58" (1/1) ... [2018-08-07 11:04:58,742 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:04:59,227 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:04:59,251 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:04:59,705 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:04:59,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59 WrapperNode [2018-08-07 11:04:59,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:04:59,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:04:59,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:04:59,783 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:04:59,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:04:59,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:04:59,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:04:59,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:05:00,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:05:00,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:05:00,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:05:00,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:05:00,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:05:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:05:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:05:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:05:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:05:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:05:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:05:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:05:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:05:05,543 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:05:05,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:05:05 BoogieIcfgContainer [2018-08-07 11:05:05,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:05:05,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:05:05,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:05:05,558 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:05:05,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:04:58" (1/3) ... [2018-08-07 11:05:05,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e467e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:05:05, skipping insertion in model container [2018-08-07 11:05:05,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (2/3) ... [2018-08-07 11:05:05,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e467e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:05:05, skipping insertion in model container [2018-08-07 11:05:05,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:05:05" (3/3) ... [2018-08-07 11:05:05,571 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label41_true-unreach-call.c [2018-08-07 11:05:05,582 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:05:05,598 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:05:05,678 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:05:05,679 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:05:05,679 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:05:05,679 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:05:05,679 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:05:05,679 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:05:05,680 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:05:05,680 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:05:05,680 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:05:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-08-07 11:05:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-08-07 11:05:05,756 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:05,758 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:05,759 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1737651188, now seen corresponding path program 1 times [2018-08-07 11:05:05,770 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:05,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:05,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:05,833 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:06,657 WARN L170 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:05:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:06,923 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:06,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:05:06,924 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:06,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:06,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:06,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:06,955 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-08-07 11:05:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:09,018 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-08-07 11:05:09,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:09,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-08-07 11:05:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:09,054 INFO L225 Difference]: With dead ends: 845 [2018-08-07 11:05:09,055 INFO L226 Difference]: Without dead ends: 531 [2018-08-07 11:05:09,063 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-08-07 11:05:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-08-07 11:05:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-08-07 11:05:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-08-07 11:05:09,161 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 189 [2018-08-07 11:05:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:09,162 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-08-07 11:05:09,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-08-07 11:05:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-08-07 11:05:09,170 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:09,171 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:09,171 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1947447789, now seen corresponding path program 1 times [2018-08-07 11:05:09,176 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:09,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:09,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:09,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:09,178 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:09,566 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:09,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 11:05:09,567 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:09,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:05:09,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:05:09,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 11:05:09,570 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-08-07 11:05:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:14,120 INFO L93 Difference]: Finished difference Result 1501 states and 2543 transitions. [2018-08-07 11:05:14,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:05:14,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-08-07 11:05:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:14,135 INFO L225 Difference]: With dead ends: 1501 [2018-08-07 11:05:14,135 INFO L226 Difference]: Without dead ends: 977 [2018-08-07 11:05:14,141 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:05:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2018-08-07 11:05:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 957. [2018-08-07 11:05:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2018-08-07 11:05:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1498 transitions. [2018-08-07 11:05:14,214 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1498 transitions. Word has length 199 [2018-08-07 11:05:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:14,214 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 1498 transitions. [2018-08-07 11:05:14,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:05:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1498 transitions. [2018-08-07 11:05:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-08-07 11:05:14,220 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:14,221 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:14,221 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -112568080, now seen corresponding path program 1 times [2018-08-07 11:05:14,222 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:14,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:14,223 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:14,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:14,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:14,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:14,649 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:14,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:15,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:15,318 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:05:15,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-08-07 11:05:15,318 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:15,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:15,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:15,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-08-07 11:05:15,321 INFO L87 Difference]: Start difference. First operand 957 states and 1498 transitions. Second operand 3 states. [2018-08-07 11:05:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:18,038 INFO L93 Difference]: Finished difference Result 2334 states and 3642 transitions. [2018-08-07 11:05:18,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:18,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2018-08-07 11:05:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:18,057 INFO L225 Difference]: With dead ends: 2334 [2018-08-07 11:05:18,057 INFO L226 Difference]: Without dead ends: 1383 [2018-08-07 11:05:18,062 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 404 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-08-07 11:05:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2018-08-07 11:05:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1380. [2018-08-07 11:05:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2018-08-07 11:05:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2056 transitions. [2018-08-07 11:05:18,146 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2056 transitions. Word has length 202 [2018-08-07 11:05:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:18,147 INFO L480 AbstractCegarLoop]: Abstraction has 1380 states and 2056 transitions. [2018-08-07 11:05:18,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2056 transitions. [2018-08-07 11:05:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-08-07 11:05:18,158 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:18,158 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:18,159 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash -862936756, now seen corresponding path program 1 times [2018-08-07 11:05:18,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:18,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:18,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:18,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:18,162 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:18,644 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:18,644 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:18,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:18,655 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:18,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:18,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:19,136 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:05:19,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 11:05:19,137 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:19,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:19,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:19,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:19,138 INFO L87 Difference]: Start difference. First operand 1380 states and 2056 transitions. Second operand 3 states. [2018-08-07 11:05:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:21,089 INFO L93 Difference]: Finished difference Result 2757 states and 4121 transitions. [2018-08-07 11:05:21,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:21,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-08-07 11:05:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:21,105 INFO L225 Difference]: With dead ends: 2757 [2018-08-07 11:05:21,106 INFO L226 Difference]: Without dead ends: 1383 [2018-08-07 11:05:21,111 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2018-08-07 11:05:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1380. [2018-08-07 11:05:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2018-08-07 11:05:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1914 transitions. [2018-08-07 11:05:21,155 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1914 transitions. Word has length 227 [2018-08-07 11:05:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:21,156 INFO L480 AbstractCegarLoop]: Abstraction has 1380 states and 1914 transitions. [2018-08-07 11:05:21,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1914 transitions. [2018-08-07 11:05:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-08-07 11:05:21,164 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:21,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:21,165 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1187874820, now seen corresponding path program 1 times [2018-08-07 11:05:21,166 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:21,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:21,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:21,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:21,168 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:21,603 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:21,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:05:21,604 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:21,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:21,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:21,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:21,605 INFO L87 Difference]: Start difference. First operand 1380 states and 1914 transitions. Second operand 3 states. [2018-08-07 11:05:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:23,048 INFO L93 Difference]: Finished difference Result 4027 states and 5730 transitions. [2018-08-07 11:05:23,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:23,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-08-07 11:05:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:23,068 INFO L225 Difference]: With dead ends: 4027 [2018-08-07 11:05:23,068 INFO L226 Difference]: Without dead ends: 2653 [2018-08-07 11:05:23,075 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2018-08-07 11:05:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2650. [2018-08-07 11:05:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2018-08-07 11:05:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3601 transitions. [2018-08-07 11:05:23,156 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3601 transitions. Word has length 235 [2018-08-07 11:05:23,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:23,157 INFO L480 AbstractCegarLoop]: Abstraction has 2650 states and 3601 transitions. [2018-08-07 11:05:23,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3601 transitions. [2018-08-07 11:05:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-08-07 11:05:23,168 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:23,169 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:05:23,169 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2115580027, now seen corresponding path program 1 times [2018-08-07 11:05:23,170 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:23,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:23,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:23,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:23,171 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:23,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:23,713 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 11:05:23,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:23,726 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:24,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-08-07 11:05:24,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-08-07 11:05:24,635 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:05:24,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 11:05:24,636 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:24,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:24,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:24,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:24,637 INFO L87 Difference]: Start difference. First operand 2650 states and 3601 transitions. Second operand 3 states. [2018-08-07 11:05:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:26,240 INFO L93 Difference]: Finished difference Result 7865 states and 10921 transitions. [2018-08-07 11:05:26,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:26,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2018-08-07 11:05:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:26,272 INFO L225 Difference]: With dead ends: 7865 [2018-08-07 11:05:26,273 INFO L226 Difference]: Without dead ends: 5221 [2018-08-07 11:05:26,285 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 504 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2018-08-07 11:05:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 5203. [2018-08-07 11:05:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5203 states. [2018-08-07 11:05:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7129 transitions. [2018-08-07 11:05:26,421 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7129 transitions. Word has length 253 [2018-08-07 11:05:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:26,422 INFO L480 AbstractCegarLoop]: Abstraction has 5203 states and 7129 transitions. [2018-08-07 11:05:26,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7129 transitions. [2018-08-07 11:05:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-08-07 11:05:26,444 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:26,444 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:26,445 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:26,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1557357935, now seen corresponding path program 1 times [2018-08-07 11:05:26,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:26,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:26,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:26,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:26,446 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 80 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-08-07 11:05:26,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:26,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:26,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:26,806 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:27,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:27,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:27,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:27,915 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:05:27,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:27,943 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:28,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:29,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-08-07 11:05:29,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:05:29,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-08-07 11:05:29,516 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:05:29,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:05:29,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:05:29,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-08-07 11:05:29,519 INFO L87 Difference]: Start difference. First operand 5203 states and 7129 transitions. Second operand 9 states. [2018-08-07 11:05:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:34,915 INFO L93 Difference]: Finished difference Result 20679 states and 30393 transitions. [2018-08-07 11:05:34,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-08-07 11:05:34,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 264 [2018-08-07 11:05:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:35,011 INFO L225 Difference]: With dead ends: 20679 [2018-08-07 11:05:35,011 INFO L226 Difference]: Without dead ends: 15482 [2018-08-07 11:05:35,041 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-08-07 11:05:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15482 states. [2018-08-07 11:05:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15482 to 15361. [2018-08-07 11:05:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15361 states. [2018-08-07 11:05:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 20908 transitions. [2018-08-07 11:05:35,517 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 20908 transitions. Word has length 264 [2018-08-07 11:05:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:35,518 INFO L480 AbstractCegarLoop]: Abstraction has 15361 states and 20908 transitions. [2018-08-07 11:05:35,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:05:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 20908 transitions. [2018-08-07 11:05:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-08-07 11:05:35,595 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:35,596 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:05:35,596 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1934379187, now seen corresponding path program 1 times [2018-08-07 11:05:35,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:35,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:35,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:35,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:35,598 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:36,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:36,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:36,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:36,008 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:36,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 11:05:36,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:37,036 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:05:37,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2018-08-07 11:05:37,037 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:37,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:05:37,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:05:37,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:05:37,038 INFO L87 Difference]: Start difference. First operand 15361 states and 20908 transitions. Second operand 6 states. [2018-08-07 11:05:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:40,526 INFO L93 Difference]: Finished difference Result 33491 states and 48223 transitions. [2018-08-07 11:05:40,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:05:40,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2018-08-07 11:05:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:40,643 INFO L225 Difference]: With dead ends: 33491 [2018-08-07 11:05:40,643 INFO L226 Difference]: Without dead ends: 17118 [2018-08-07 11:05:40,737 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 600 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:05:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17118 states. [2018-08-07 11:05:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17118 to 16562. [2018-08-07 11:05:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16562 states. [2018-08-07 11:05:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16562 states to 16562 states and 22517 transitions. [2018-08-07 11:05:41,313 INFO L78 Accepts]: Start accepts. Automaton has 16562 states and 22517 transitions. Word has length 304 [2018-08-07 11:05:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:41,314 INFO L480 AbstractCegarLoop]: Abstraction has 16562 states and 22517 transitions. [2018-08-07 11:05:41,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:05:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 16562 states and 22517 transitions. [2018-08-07 11:05:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-08-07 11:05:41,383 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:41,384 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:05:41,384 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash 99331857, now seen corresponding path program 1 times [2018-08-07 11:05:41,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:41,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:41,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:41,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:41,386 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:42,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:42,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:42,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:42,116 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:42,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:42,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:42,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:42,877 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:05:42,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:42,895 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:43,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:43,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:43,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:05:43,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-08-07 11:05:43,769 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:05:43,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:05:43,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:05:43,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:05:43,771 INFO L87 Difference]: Start difference. First operand 16562 states and 22517 transitions. Second operand 9 states. [2018-08-07 11:05:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:50,044 INFO L93 Difference]: Finished difference Result 65732 states and 95753 transitions. [2018-08-07 11:05:50,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-08-07 11:05:50,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2018-08-07 11:05:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:50,579 INFO L225 Difference]: With dead ends: 65732 [2018-08-07 11:05:50,579 INFO L226 Difference]: Without dead ends: 49176 [2018-08-07 11:05:50,637 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 1293 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2018-08-07 11:05:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49176 states. [2018-08-07 11:05:51,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49176 to 45363. [2018-08-07 11:05:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45363 states. [2018-08-07 11:05:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45363 states to 45363 states and 59245 transitions. [2018-08-07 11:05:52,060 INFO L78 Accepts]: Start accepts. Automaton has 45363 states and 59245 transitions. Word has length 325 [2018-08-07 11:05:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:52,060 INFO L480 AbstractCegarLoop]: Abstraction has 45363 states and 59245 transitions. [2018-08-07 11:05:52,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:05:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 45363 states and 59245 transitions. [2018-08-07 11:05:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-08-07 11:05:52,161 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:52,162 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:05:52,162 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash -741077395, now seen corresponding path program 1 times [2018-08-07 11:05:52,162 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:52,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:52,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:52,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:52,166 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:52,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:52,835 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:52,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:52,851 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:53,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:53,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:53,784 WARN L170 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-08-07 11:05:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:54,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:54,356 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:05:54,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:54,384 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:55,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:55,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:55,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:05:55,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-08-07 11:05:55,508 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:05:55,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:05:55,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:05:55,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:05:55,513 INFO L87 Difference]: Start difference. First operand 45363 states and 59245 transitions. Second operand 9 states. [2018-08-07 11:05:55,856 WARN L170 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-08-07 11:06:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:04,924 INFO L93 Difference]: Finished difference Result 151548 states and 221924 transitions. [2018-08-07 11:06:04,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-08-07 11:06:04,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 327 [2018-08-07 11:06:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:05,900 INFO L225 Difference]: With dead ends: 151548 [2018-08-07 11:06:05,900 INFO L226 Difference]: Without dead ends: 106405 [2018-08-07 11:06:06,107 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1363 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-08-07 11:06:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106405 states. [2018-08-07 11:06:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106405 to 99397. [2018-08-07 11:06:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99397 states. [2018-08-07 11:06:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99397 states to 99397 states and 120560 transitions. [2018-08-07 11:06:08,413 INFO L78 Accepts]: Start accepts. Automaton has 99397 states and 120560 transitions. Word has length 327 [2018-08-07 11:06:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:08,414 INFO L480 AbstractCegarLoop]: Abstraction has 99397 states and 120560 transitions. [2018-08-07 11:06:08,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:06:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 99397 states and 120560 transitions. [2018-08-07 11:06:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-08-07 11:06:08,526 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:08,526 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:06:08,526 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 864215609, now seen corresponding path program 1 times [2018-08-07 11:06:08,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:08,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:08,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:08,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:08,528 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:09,248 WARN L170 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-08-07 11:06:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:09,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:09,641 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 11:06:09,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:09,658 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:10,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:06:10,791 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:06:10,991 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:06:10,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-08-07 11:06:10,991 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:06:10,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:06:10,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:06:10,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:06:10,992 INFO L87 Difference]: Start difference. First operand 99397 states and 120560 transitions. Second operand 5 states. [2018-08-07 11:06:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:12,648 INFO L93 Difference]: Finished difference Result 196337 states and 241104 transitions. [2018-08-07 11:06:12,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:06:12,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2018-08-07 11:06:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:12,979 INFO L225 Difference]: With dead ends: 196337 [2018-08-07 11:06:12,979 INFO L226 Difference]: Without dead ends: 98629 [2018-08-07 11:06:13,155 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:06:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98629 states. [2018-08-07 11:06:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98629 to 97316. [2018-08-07 11:06:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97316 states. [2018-08-07 11:06:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97316 states to 97316 states and 117391 transitions. [2018-08-07 11:06:15,034 INFO L78 Accepts]: Start accepts. Automaton has 97316 states and 117391 transitions. Word has length 352 [2018-08-07 11:06:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:15,034 INFO L480 AbstractCegarLoop]: Abstraction has 97316 states and 117391 transitions. [2018-08-07 11:06:15,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:06:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 97316 states and 117391 transitions. [2018-08-07 11:06:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-08-07 11:06:15,255 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:15,255 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:06:15,256 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:15,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1774600941, now seen corresponding path program 1 times [2018-08-07 11:06:15,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:15,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:15,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:15,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:15,258 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 315 proven. 89 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-08-07 11:06:17,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:17,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:17,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:17,013 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:17,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-08-07 11:06:17,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 315 proven. 89 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-08-07 11:06:18,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:18,041 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:06:18,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:18,057 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:18,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-08-07 11:06:19,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 315 proven. 89 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-08-07 11:06:19,217 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:06:19,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-08-07 11:06:19,218 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:06:19,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:06:19,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:06:19,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:06:19,219 INFO L87 Difference]: Start difference. First operand 97316 states and 117391 transitions. Second operand 9 states. [2018-08-07 11:06:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:33,031 INFO L93 Difference]: Finished difference Result 354801 states and 484791 transitions. [2018-08-07 11:06:33,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-08-07 11:06:33,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 466 [2018-08-07 11:06:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:33,978 INFO L225 Difference]: With dead ends: 354801 [2018-08-07 11:06:33,979 INFO L226 Difference]: Without dead ends: 258654 [2018-08-07 11:06:34,180 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1874 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2018-08-07 11:06:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258654 states. [2018-08-07 11:06:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258654 to 246015. [2018-08-07 11:06:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246015 states. [2018-08-07 11:06:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246015 states to 246015 states and 299008 transitions. [2018-08-07 11:06:40,466 INFO L78 Accepts]: Start accepts. Automaton has 246015 states and 299008 transitions. Word has length 466 [2018-08-07 11:06:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:40,466 INFO L480 AbstractCegarLoop]: Abstraction has 246015 states and 299008 transitions. [2018-08-07 11:06:40,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:06:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 246015 states and 299008 transitions. [2018-08-07 11:06:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-08-07 11:06:40,823 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:40,823 INFO L376 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:06:40,823 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:40,824 INFO L82 PathProgramCache]: Analyzing trace with hash -896316657, now seen corresponding path program 1 times [2018-08-07 11:06:40,824 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:40,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:40,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:40,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:40,825 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 308 proven. 74 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-08-07 11:06:41,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:41,286 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:41,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:41,294 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:41,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-08-07 11:06:41,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 350 proven. 89 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-08-07 11:06:42,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:42,984 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:06:43,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:43,001 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:43,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-08-07 11:06:44,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 350 proven. 89 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-08-07 11:06:44,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:06:44,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-08-07 11:06:44,234 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:06:44,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:06:44,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:06:44,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:06:44,236 INFO L87 Difference]: Start difference. First operand 246015 states and 299008 transitions. Second operand 9 states. [2018-08-07 11:06:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:59,193 INFO L93 Difference]: Finished difference Result 431766 states and 542603 transitions. [2018-08-07 11:06:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-08-07 11:06:59,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-08-07 11:06:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:59,953 INFO L225 Difference]: With dead ends: 431766 [2018-08-07 11:06:59,954 INFO L226 Difference]: Without dead ends: 186897 [2018-08-07 11:07:00,343 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1996 GetRequests, 1947 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=459, Invalid=1893, Unknown=0, NotChecked=0, Total=2352 [2018-08-07 11:07:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186897 states. [2018-08-07 11:07:03,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186897 to 177457. [2018-08-07 11:07:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177457 states. [2018-08-07 11:07:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177457 states to 177457 states and 205612 transitions. [2018-08-07 11:07:04,006 INFO L78 Accepts]: Start accepts. Automaton has 177457 states and 205612 transitions. Word has length 481 [2018-08-07 11:07:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:04,006 INFO L480 AbstractCegarLoop]: Abstraction has 177457 states and 205612 transitions. [2018-08-07 11:07:04,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:07:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 177457 states and 205612 transitions. [2018-08-07 11:07:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-08-07 11:07:04,409 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:04,410 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 11:07:04,410 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash -592567081, now seen corresponding path program 1 times [2018-08-07 11:07:04,410 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:04,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:04,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:04,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:04,412 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 325 proven. 33 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-08-07 11:07:05,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:05,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:07:05,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:05,160 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:05,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 357 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-08-07 11:07:06,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 338 proven. 33 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-08-07 11:07:07,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:07,230 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:07:07,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:07,250 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:08,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 357 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-08-07 11:07:08,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 338 proven. 33 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-08-07 11:07:08,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:07:08,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-08-07 11:07:08,628 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:07:08,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:07:08,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:07:08,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:07:08,630 INFO L87 Difference]: Start difference. First operand 177457 states and 205612 transitions. Second operand 9 states. [2018-08-07 11:07:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:44,038 INFO L93 Difference]: Finished difference Result 1235887 states and 1619869 transitions. [2018-08-07 11:07:44,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-08-07 11:07:44,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 498 [2018-08-07 11:07:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:48,912 INFO L225 Difference]: With dead ends: 1235887 [2018-08-07 11:07:48,912 INFO L226 Difference]: Without dead ends: 1067447 [2018-08-07 11:07:49,427 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 2052 GetRequests, 2006 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980 [2018-08-07 11:07:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067447 states. [2018-08-07 11:08:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067447 to 1011523. [2018-08-07 11:08:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011523 states. Received shutdown request... [2018-08-07 11:08:29,382 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 11:08:29,387 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 11:08:29,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 11:08:29 BoogieIcfgContainer [2018-08-07 11:08:29,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 11:08:29,389 INFO L168 Benchmark]: Toolchain (without parser) took 210917.76 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -189.7 MB). Peak memory consumption was 5.0 GB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,390 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 11:08:29,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1307.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,392 INFO L168 Benchmark]: Boogie Preprocessor took 360.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -962.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,392 INFO L168 Benchmark]: RCFGBuilder took 5228.88 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: 294.8 MB). Peak memory consumption was 294.8 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,393 INFO L168 Benchmark]: TraceAbstraction took 203837.24 ms. Allocated memory was 2.4 GB in the beginning and 6.0 GB in the end (delta: 3.6 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 369.2 MB). Peak memory consumption was 4.7 GB. Max. memory is 7.1 GB. [2018-08-07 11:08:29,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1307.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 171.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 360.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -962.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5228.88 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: 294.8 MB). Peak memory consumption was 294.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203837.24 ms. Allocated memory was 2.4 GB in the beginning and 6.0 GB in the end (delta: 3.6 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 369.2 MB). Peak memory consumption was 4.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1581]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1581). Cancelled while ReachableStatesComputation was computing reachable states (1008755 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 115.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5878 SDtfs, 22938 SDslu, 9770 SDs, 0 SdLazy, 32909 SolverSat, 6117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12454 GetRequests, 12151 SyntacticMatches, 22 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246015occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 57.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 34938 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 7.2s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 10382 NumberOfCodeBlocks, 10382 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 16394 ConstructedInterpolants, 0 QuantifiedInterpolants, 11425877 SizeOfPredicates, 27 NumberOfNonLiveVariables, 21809 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 48 InterpolantComputations, 12 PerfectInterpolantSequences, 10256/10990 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/Problem03_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-08-29-412.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_11-08-29-412.csv Completed graceful shutdown