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/Problem13_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:35:58,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:35:58,420 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:35:58,438 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:35:58,438 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:35:58,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:35:58,441 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:35:58,443 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:35:58,446 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:35:58,447 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:35:58,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:35:58,456 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:35:58,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:35:58,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:35:58,462 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:35:58,463 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:35:58,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:35:58,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:35:58,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:35:58,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:35:58,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:35:58,478 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:35:58,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:35:58,482 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:35:58,482 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:35:58,484 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:35:58,485 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:35:58,486 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:35:58,487 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:35:58,489 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:35:58,489 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:35:58,491 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:35:58,491 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:35:58,491 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:35:58,492 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:35:58,493 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:35:58,493 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 [2018-09-14 17:35:58,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:35:58,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:35:58,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:35:58,514 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:35:58,514 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:35:58,515 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:35:58,515 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:35:58,515 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:35:58,515 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:35:58,515 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:35:58,516 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:35:58,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:35:58,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:35:58,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:35:58,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:35:58,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:35:58,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:35:58,518 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:35:58,518 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:35:58,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:35:58,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:35:58,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:35:58,519 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:35:58,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:35:58,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:35:58,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:35:58,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:35:58,519 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:35:58,520 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:35:58,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:35:58,520 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:35:58,520 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:35:58,520 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:35:58,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:35:58,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:35:58,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:35:58,582 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:35:58,583 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:35:58,583 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-09-14 17:35:58,930 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1078b4ba/eda341cbf7624188b7b90476f9a79312/FLAG883f96787 [2018-09-14 17:35:59,467 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:35:59,468 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-09-14 17:35:59,499 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1078b4ba/eda341cbf7624188b7b90476f9a79312/FLAG883f96787 [2018-09-14 17:35:59,515 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1078b4ba/eda341cbf7624188b7b90476f9a79312 [2018-09-14 17:35:59,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:35:59,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:35:59,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:35:59,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:35:59,538 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:35:59,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:35:59" (1/1) ... [2018-09-14 17:35:59,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d288cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:35:59, skipping insertion in model container [2018-09-14 17:35:59,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:35:59" (1/1) ... [2018-09-14 17:35:59,554 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:36:01,011 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:36:01,031 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:36:01,833 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:36:02,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02 WrapperNode [2018-09-14 17:36:02,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:36:02,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:36:02,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:36:02,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:36:02,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:02,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:02,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:36:02,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:36:02,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:36:02,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:36:03,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (1/1) ... [2018-09-14 17:36:03,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:36:03,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:36:03,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:36:03,698 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:36:03,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (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 [2018-09-14 17:36:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:36:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:36:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:36:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:36:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:36:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:36:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:36:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:36:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:36:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:36:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:36:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:36:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:36:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:36:14,869 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:36:14,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:36:14 BoogieIcfgContainer [2018-09-14 17:36:14,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:36:14,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:36:14,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:36:14,875 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:36:14,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:35:59" (1/3) ... [2018-09-14 17:36:14,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8a2b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:36:14, skipping insertion in model container [2018-09-14 17:36:14,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:36:02" (2/3) ... [2018-09-14 17:36:14,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8a2b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:36:14, skipping insertion in model container [2018-09-14 17:36:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:36:14" (3/3) ... [2018-09-14 17:36:14,879 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56_true-unreach-call.c [2018-09-14 17:36:14,888 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:36:14,897 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:36:14,967 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:36:14,967 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:36:14,968 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:36:14,968 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:36:14,968 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:36:14,968 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:36:14,968 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:36:14,968 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:36:14,969 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:36:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:36:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-14 17:36:15,023 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:15,025 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] [2018-09-14 17:36:15,026 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash -460452772, now seen corresponding path program 1 times [2018-09-14 17:36:15,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:15,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:15,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:15,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:15,087 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:15,630 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:36:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:15,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:15,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:36:15,718 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:15,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:36:15,739 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:36:15,740 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:36:15,742 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:36:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:25,467 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-09-14 17:36:25,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:36:25,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-09-14 17:36:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:25,504 INFO L225 Difference]: With dead ends: 3087 [2018-09-14 17:36:25,504 INFO L226 Difference]: Without dead ends: 1965 [2018-09-14 17:36:25,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:36:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-09-14 17:36:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-09-14 17:36:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-14 17:36:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-09-14 17:36:25,712 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 60 [2018-09-14 17:36:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:25,713 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-09-14 17:36:25,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:36:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-09-14 17:36:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-14 17:36:25,727 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:25,728 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:36:25,728 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:25,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1916095534, now seen corresponding path program 1 times [2018-09-14 17:36:25,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:25,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:25,731 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:26,126 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:36:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:26,408 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:26,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:36:26,408 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:26,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:36:26,410 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:36:26,411 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:36:26,411 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-09-14 17:36:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:39,006 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-09-14 17:36:39,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:36:39,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-14 17:36:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:39,031 INFO L225 Difference]: With dead ends: 5634 [2018-09-14 17:36:39,032 INFO L226 Difference]: Without dead ends: 3681 [2018-09-14 17:36:39,038 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:36:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-09-14 17:36:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-09-14 17:36:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-09-14 17:36:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-09-14 17:36:39,155 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 137 [2018-09-14 17:36:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:39,157 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-09-14 17:36:39,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:36:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-09-14 17:36:39,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-09-14 17:36:39,174 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:39,174 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:36:39,174 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:39,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1937343332, now seen corresponding path program 1 times [2018-09-14 17:36:39,175 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:39,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:39,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:39,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:39,176 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:39,555 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:39,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:36:39,556 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:39,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:36:39,557 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:36:39,557 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:36:39,557 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-09-14 17:36:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:36:51,347 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-09-14 17:36:51,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:36:51,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-09-14 17:36:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:36:51,393 INFO L225 Difference]: With dead ends: 12385 [2018-09-14 17:36:51,394 INFO L226 Difference]: Without dead ends: 8741 [2018-09-14 17:36:51,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:36:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-09-14 17:36:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-09-14 17:36:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-09-14 17:36:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-09-14 17:36:51,639 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 156 [2018-09-14 17:36:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:36:51,639 INFO L480 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-09-14 17:36:51,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:36:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-09-14 17:36:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-14 17:36:51,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:36:51,644 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:36:51,644 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:36:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash -411394740, now seen corresponding path program 1 times [2018-09-14 17:36:51,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:36:51,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:51,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:36:51,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:36:51,650 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:36:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:36:51,932 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:36:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:36:51,986 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:36:51,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:36:51,986 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:36:51,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:36:51,987 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:36:51,987 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:36:51,988 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-09-14 17:37:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:05,559 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-09-14 17:37:05,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:37:05,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-09-14 17:37:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:05,634 INFO L225 Difference]: With dead ends: 22909 [2018-09-14 17:37:05,635 INFO L226 Difference]: Without dead ends: 14231 [2018-09-14 17:37:05,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:37:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-09-14 17:37:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-09-14 17:37:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-09-14 17:37:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-09-14 17:37:06,022 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 168 [2018-09-14 17:37:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:06,023 INFO L480 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-09-14 17:37:06,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:37:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-09-14 17:37:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 17:37:06,033 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:06,033 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:06,033 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash -457278060, now seen corresponding path program 1 times [2018-09-14 17:37:06,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:06,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:06,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:06,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:06,035 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:06,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:06,361 INFO L197 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 [2018-09-14 17:37:06,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:06,377 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:06,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-09-14 17:37:06,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:06,941 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:37:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:07,186 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:37:07,186 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-14 17:37:07,187 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:07,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:07,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:07,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:37:07,188 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 5 states. [2018-09-14 17:37:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:23,381 INFO L93 Difference]: Finished difference Result 41297 states and 63500 transitions. [2018-09-14 17:37:23,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:23,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2018-09-14 17:37:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:23,525 INFO L225 Difference]: With dead ends: 41297 [2018-09-14 17:37:23,525 INFO L226 Difference]: Without dead ends: 27246 [2018-09-14 17:37:23,580 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:37:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27246 states. [2018-09-14 17:37:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27246 to 27007. [2018-09-14 17:37:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27007 states. [2018-09-14 17:37:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27007 states to 27007 states and 38194 transitions. [2018-09-14 17:37:24,365 INFO L78 Accepts]: Start accepts. Automaton has 27007 states and 38194 transitions. Word has length 232 [2018-09-14 17:37:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:24,366 INFO L480 AbstractCegarLoop]: Abstraction has 27007 states and 38194 transitions. [2018-09-14 17:37:24,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27007 states and 38194 transitions. [2018-09-14 17:37:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-14 17:37:24,380 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:24,381 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:24,381 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1397570392, now seen corresponding path program 1 times [2018-09-14 17:37:24,382 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:24,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:24,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:24,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:24,383 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:37:24,708 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:37:24,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:37:24,709 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:24,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:37:24,710 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:37:24,710 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:37:24,710 INFO L87 Difference]: Start difference. First operand 27007 states and 38194 transitions. Second operand 3 states. [2018-09-14 17:37:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:35,916 INFO L93 Difference]: Finished difference Result 63942 states and 95295 transitions. [2018-09-14 17:37:35,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:37:35,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-09-14 17:37:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:36,061 INFO L225 Difference]: With dead ends: 63942 [2018-09-14 17:37:36,061 INFO L226 Difference]: Without dead ends: 36941 [2018-09-14 17:37:36,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:37:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36941 states. [2018-09-14 17:37:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36941 to 36941. [2018-09-14 17:37:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36941 states. [2018-09-14 17:37:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36941 states to 36941 states and 53029 transitions. [2018-09-14 17:37:36,908 INFO L78 Accepts]: Start accepts. Automaton has 36941 states and 53029 transitions. Word has length 262 [2018-09-14 17:37:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:36,911 INFO L480 AbstractCegarLoop]: Abstraction has 36941 states and 53029 transitions. [2018-09-14 17:37:36,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:37:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 36941 states and 53029 transitions. [2018-09-14 17:37:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-14 17:37:36,926 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:36,927 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:37:36,927 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash -594006696, now seen corresponding path program 1 times [2018-09-14 17:37:36,928 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:36,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:36,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:36,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:36,935 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 106 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:37,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:37,335 INFO L197 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 [2018-09-14 17:37:37,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:37,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:37,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-09-14 17:37:38,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 106 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:37:38,877 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:37:38,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-14 17:37:38,878 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:37:38,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:37:38,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:37:38,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:37:38,879 INFO L87 Difference]: Start difference. First operand 36941 states and 53029 transitions. Second operand 5 states. [2018-09-14 17:37:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:37:50,295 INFO L93 Difference]: Finished difference Result 87794 states and 133698 transitions. [2018-09-14 17:37:50,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:37:50,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2018-09-14 17:37:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:37:50,513 INFO L225 Difference]: With dead ends: 87794 [2018-09-14 17:37:50,513 INFO L226 Difference]: Without dead ends: 50859 [2018-09-14 17:37:50,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 519 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:37:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50859 states. [2018-09-14 17:37:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50859 to 50582. [2018-09-14 17:37:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50582 states. [2018-09-14 17:37:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50582 states to 50582 states and 73593 transitions. [2018-09-14 17:37:51,971 INFO L78 Accepts]: Start accepts. Automaton has 50582 states and 73593 transitions. Word has length 262 [2018-09-14 17:37:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:37:51,972 INFO L480 AbstractCegarLoop]: Abstraction has 50582 states and 73593 transitions. [2018-09-14 17:37:51,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:37:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 50582 states and 73593 transitions. [2018-09-14 17:37:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-09-14 17:37:52,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:37:52,015 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:37:52,016 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:37:52,016 INFO L82 PathProgramCache]: Analyzing trace with hash -794275078, now seen corresponding path program 1 times [2018-09-14 17:37:52,016 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:37:52,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:52,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:52,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:37:52,017 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:37:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:37:52,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:52,688 INFO L197 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 [2018-09-14 17:37:52,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:52,699 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:52,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:37:53,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:37:53,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:37:53,504 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:37:53,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:37:53,519 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:37:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:37:53,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:37:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:37:53,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:37:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:37:54,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:37:54,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:37:54,193 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:37:54,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:37:54,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:37:54,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:37:54,197 INFO L87 Difference]: Start difference. First operand 50582 states and 73593 transitions. Second operand 9 states. [2018-09-14 17:38:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:12,259 INFO L93 Difference]: Finished difference Result 124287 states and 219288 transitions. [2018-09-14 17:38:12,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:38:12,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 348 [2018-09-14 17:38:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:12,696 INFO L225 Difference]: With dead ends: 124287 [2018-09-14 17:38:12,696 INFO L226 Difference]: Without dead ends: 73711 [2018-09-14 17:38:12,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1390 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:38:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73711 states. [2018-09-14 17:38:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73711 to 73259. [2018-09-14 17:38:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73259 states. [2018-09-14 17:38:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73259 states to 73259 states and 113291 transitions. [2018-09-14 17:38:15,778 INFO L78 Accepts]: Start accepts. Automaton has 73259 states and 113291 transitions. Word has length 348 [2018-09-14 17:38:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:15,779 INFO L480 AbstractCegarLoop]: Abstraction has 73259 states and 113291 transitions. [2018-09-14 17:38:15,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:38:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 73259 states and 113291 transitions. [2018-09-14 17:38:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-09-14 17:38:15,932 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:15,933 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:15,933 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash -69382556, now seen corresponding path program 1 times [2018-09-14 17:38:15,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:15,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:15,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:15,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:15,935 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 256 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:16,590 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:16,590 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:38:16,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:16,607 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:16,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-09-14 17:38:17,108 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 256 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:17,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:17,301 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:38:17,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:17,321 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:17,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-09-14 17:38:17,863 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 256 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:38:18,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:38:18,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:38:18,031 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:38:18,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:38:18,032 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:38:18,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:38:18,033 INFO L87 Difference]: Start difference. First operand 73259 states and 113291 transitions. Second operand 9 states. [2018-09-14 17:38:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:45,050 INFO L93 Difference]: Finished difference Result 155399 states and 281711 transitions. [2018-09-14 17:38:45,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-14 17:38:45,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 356 [2018-09-14 17:38:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:45,507 INFO L225 Difference]: With dead ends: 155399 [2018-09-14 17:38:45,507 INFO L226 Difference]: Without dead ends: 82151 [2018-09-14 17:38:45,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1426 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:38:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82151 states. [2018-09-14 17:38:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82151 to 80472. [2018-09-14 17:38:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80472 states. [2018-09-14 17:38:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80472 states to 80472 states and 111483 transitions. [2018-09-14 17:38:47,648 INFO L78 Accepts]: Start accepts. Automaton has 80472 states and 111483 transitions. Word has length 356 [2018-09-14 17:38:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:47,648 INFO L480 AbstractCegarLoop]: Abstraction has 80472 states and 111483 transitions. [2018-09-14 17:38:47,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:38:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 80472 states and 111483 transitions. [2018-09-14 17:38:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-14 17:38:47,681 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:47,682 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:47,682 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:47,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1424138924, now seen corresponding path program 1 times [2018-09-14 17:38:47,683 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:47,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:47,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:47,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:47,684 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:48,034 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:38:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 157 proven. 201 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:38:48,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:48,932 INFO L197 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 [2018-09-14 17:38:48,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:48,939 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:49,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-14 17:38:49,319 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 169 proven. 278 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:38:50,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:50,184 INFO L197 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 [2018-09-14 17:38:50,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:50,202 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:50,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:38:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-09-14 17:38:50,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:38:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-09-14 17:38:50,726 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 17:38:50,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 7, 8] total 18 [2018-09-14 17:38:50,727 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:38:50,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:38:50,728 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:38:50,728 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:38:50,731 INFO L87 Difference]: Start difference. First operand 80472 states and 111483 transitions. Second operand 3 states. [2018-09-14 17:38:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:38:57,676 INFO L93 Difference]: Finished difference Result 160939 states and 222936 transitions. [2018-09-14 17:38:57,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:38:57,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-09-14 17:38:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:38:57,857 INFO L225 Difference]: With dead ends: 160939 [2018-09-14 17:38:57,857 INFO L226 Difference]: Without dead ends: 80478 [2018-09-14 17:38:57,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1441 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:38:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80478 states. [2018-09-14 17:38:58,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80478 to 80463. [2018-09-14 17:38:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80463 states. [2018-09-14 17:38:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80463 states to 80463 states and 100959 transitions. [2018-09-14 17:38:59,048 INFO L78 Accepts]: Start accepts. Automaton has 80463 states and 100959 transitions. Word has length 363 [2018-09-14 17:38:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:38:59,049 INFO L480 AbstractCegarLoop]: Abstraction has 80463 states and 100959 transitions. [2018-09-14 17:38:59,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:38:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 80463 states and 100959 transitions. [2018-09-14 17:38:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-09-14 17:38:59,132 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:38:59,132 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:38:59,133 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:38:59,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1030147593, now seen corresponding path program 1 times [2018-09-14 17:38:59,133 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:38:59,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:59,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:59,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:38:59,134 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:38:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 106 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:38:59,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:38:59,560 INFO L197 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 [2018-09-14 17:38:59,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:38:59,568 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:38:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:38:59,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-09-14 17:39:00,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 106 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:39:01,104 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:39:01,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:39:01,105 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:01,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:39:01,106 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:39:01,106 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:39:01,106 INFO L87 Difference]: Start difference. First operand 80463 states and 100959 transitions. Second operand 5 states. [2018-09-14 17:39:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:17,042 INFO L93 Difference]: Finished difference Result 204051 states and 267702 transitions. [2018-09-14 17:39:17,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:39:17,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 506 [2018-09-14 17:39:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:17,478 INFO L225 Difference]: With dead ends: 204051 [2018-09-14 17:39:17,479 INFO L226 Difference]: Without dead ends: 123599 [2018-09-14 17:39:17,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1007 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:39:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123599 states. [2018-09-14 17:39:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123599 to 123115. [2018-09-14 17:39:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123115 states. [2018-09-14 17:39:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123115 states to 123115 states and 154892 transitions. [2018-09-14 17:39:20,500 INFO L78 Accepts]: Start accepts. Automaton has 123115 states and 154892 transitions. Word has length 506 [2018-09-14 17:39:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:20,500 INFO L480 AbstractCegarLoop]: Abstraction has 123115 states and 154892 transitions. [2018-09-14 17:39:20,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:39:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 123115 states and 154892 transitions. [2018-09-14 17:39:20,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-09-14 17:39:20,605 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:20,605 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:20,605 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:20,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1365326288, now seen corresponding path program 1 times [2018-09-14 17:39:20,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:20,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:20,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:20,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:20,607 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:21,067 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:39:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 215 proven. 6 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-09-14 17:39:21,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:21,342 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:39:21,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:21,350 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:21,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 17:39:21,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 17:39:22,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:22,765 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:39:22,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:22,780 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:23,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 17:39:23,937 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:39:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 17:39:24,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:39:24,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 17:39:24,618 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:39:24,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:39:24,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:39:24,620 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:39:24,620 INFO L87 Difference]: Start difference. First operand 123115 states and 154892 transitions. Second operand 9 states. [2018-09-14 17:39:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:39:39,713 INFO L93 Difference]: Finished difference Result 231042 states and 304965 transitions. [2018-09-14 17:39:39,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:39:39,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 560 [2018-09-14 17:39:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:39:40,153 INFO L225 Difference]: With dead ends: 231042 [2018-09-14 17:39:40,154 INFO L226 Difference]: Without dead ends: 124199 [2018-09-14 17:39:40,286 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2263 GetRequests, 2238 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:39:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124199 states. [2018-09-14 17:39:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124199 to 123657. [2018-09-14 17:39:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123657 states. [2018-09-14 17:39:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123657 states to 123657 states and 154867 transitions. [2018-09-14 17:39:42,798 INFO L78 Accepts]: Start accepts. Automaton has 123657 states and 154867 transitions. Word has length 560 [2018-09-14 17:39:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:39:42,799 INFO L480 AbstractCegarLoop]: Abstraction has 123657 states and 154867 transitions. [2018-09-14 17:39:42,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:39:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 123657 states and 154867 transitions. [2018-09-14 17:39:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-09-14 17:39:42,901 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:39:42,902 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:39:42,902 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:39:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1194922272, now seen corresponding path program 1 times [2018-09-14 17:39:42,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:39:42,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:42,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:42,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:39:42,904 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:39:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 159 proven. 178 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-14 17:39:43,244 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:39:43,244 INFO L197 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 [2018-09-14 17:39:43,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:39:43,252 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:39:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:39:43,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:39:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-14 17:39:43,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 17:39:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 159 proven. 94 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-09-14 17:39:44,225 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:39:44,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:39:44,226 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:39:44,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:39:44,226 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:39:44,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:39:44,227 INFO L87 Difference]: Start difference. First operand 123657 states and 154867 transitions. Second operand 3 states. [2018-09-14 17:39:44,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 17:39:44,228 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:39:44,233 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:39:44,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:39:44 BoogieIcfgContainer [2018-09-14 17:39:44,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:39:44,234 INFO L168 Benchmark]: Toolchain (without parser) took 224706.94 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,235 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-09-14 17:39:44,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2628.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,237 INFO L168 Benchmark]: Boogie Preprocessor took 1230.64 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,238 INFO L168 Benchmark]: RCFGBuilder took 11171.65 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 147.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 9.3 MB). Peak memory consumption was 746.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,239 INFO L168 Benchmark]: TraceAbstraction took 209362.91 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 974.7 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 173.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:39:44,244 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2628.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1230.64 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11171.65 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 147.3 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 9.3 MB). Peak memory consumption was 746.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209362.91 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 974.7 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 173.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (123657states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7870 SDtfs, 49295 SDslu, 6957 SDs, 0 SdLazy, 79377 SolverSat, 18683 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 139.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9842 GetRequests, 9672 SyntacticMatches, 33 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123657occurred 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: 14.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 3956 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 8840 NumberOfCodeBlocks, 8840 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 13645 ConstructedInterpolants, 111 QuantifiedInterpolants, 14863905 SizeOfPredicates, 11 NumberOfNonLiveVariables, 8041 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 37 InterpolantComputations, 11 PerfectInterpolantSequences, 12026/13794 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/Problem13_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-39-44-258.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-39-44-258.csv Completed graceful shutdown