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/Problem18_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:14:58,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:14:58,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:14:58,923 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:14:58,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:14:58,925 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:14:58,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:14:58,928 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:14:58,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:14:58,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:14:58,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:14:58,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:14:58,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:14:58,937 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:14:58,938 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:14:58,939 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:14:58,940 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:14:58,942 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:14:58,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:14:58,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:14:58,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:14:58,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:14:58,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:14:58,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:14:58,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:14:58,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:14:58,954 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:14:58,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:14:58,956 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:14:58,957 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:14:58,957 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:14:58,958 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:14:58,958 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:14:58,958 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:14:58,959 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:14:58,960 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:14:58,961 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 18:14:58,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:14:58,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:14:58,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:14:58,978 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:14:58,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:14:58,979 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:14:58,979 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:14:58,979 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:14:58,979 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:14:58,979 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:14:58,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:14:58,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:14:58,980 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:14:58,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:14:58,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:14:58,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:14:58,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:14:58,981 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:14:58,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:14:58,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:14:58,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:14:58,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:14:58,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:14:58,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:14:58,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:14:58,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:14:58,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:14:58,984 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:14:59,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:14:59,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:14:59,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:14:59,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:14:59,075 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:14:59,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-09-14 18:14:59,452 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f148b1687/c77a339a075e4db793acf3d1d31fa8fa/FLAGcf6d1bc90 [2018-09-14 18:14:59,906 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:14:59,907 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-09-14 18:14:59,940 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f148b1687/c77a339a075e4db793acf3d1d31fa8fa/FLAGcf6d1bc90 [2018-09-14 18:14:59,956 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f148b1687/c77a339a075e4db793acf3d1d31fa8fa [2018-09-14 18:14:59,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:14:59,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:14:59,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:14:59,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:14:59,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:14:59,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:14:59" (1/1) ... [2018-09-14 18:14:59,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e553ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:59, skipping insertion in model container [2018-09-14 18:14:59,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:14:59" (1/1) ... [2018-09-14 18:15:00,004 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:15:01,169 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:15:01,189 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:15:01,635 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:15:01,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01 WrapperNode [2018-09-14 18:15:01,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:15:01,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:15:01,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:15:01,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:15:01,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:01,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:01,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:15:01,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:15:01,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:15:01,986 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:15:02,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (1/1) ... [2018-09-14 18:15:02,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:15:02,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:15:02,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:15:02,566 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:15:02,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (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 18:15:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:15:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:15:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:15:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:15:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:15:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:15:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:15:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:15:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:15:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:15:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:15:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:15:11,449 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:15:11,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:15:11 BoogieIcfgContainer [2018-09-14 18:15:11,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:15:11,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:15:11,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:15:11,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:15:11,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:14:59" (1/3) ... [2018-09-14 18:15:11,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f291bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:15:11, skipping insertion in model container [2018-09-14 18:15:11,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:15:01" (2/3) ... [2018-09-14 18:15:11,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f291bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:15:11, skipping insertion in model container [2018-09-14 18:15:11,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:15:11" (3/3) ... [2018-09-14 18:15:11,459 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label44_true-unreach-call.c [2018-09-14 18:15:11,468 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:15:11,477 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:15:11,539 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:15:11,540 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:15:11,540 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:15:11,541 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:15:11,541 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:15:11,541 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:15:11,541 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:15:11,541 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:15:11,541 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:15:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:15:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-14 18:15:11,594 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:11,595 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] [2018-09-14 18:15:11,596 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1357695353, now seen corresponding path program 1 times [2018-09-14 18:15:11,605 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:11,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:11,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:11,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:11,663 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:12,124 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 18:15:12,151 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 18:15:12,157 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:12,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:15:12,160 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:12,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:15:12,207 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:15:12,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:15:12,214 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-09-14 18:15:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:23,129 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-09-14 18:15:23,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:15:23,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-14 18:15:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:23,169 INFO L225 Difference]: With dead ends: 2974 [2018-09-14 18:15:23,169 INFO L226 Difference]: Without dead ends: 2193 [2018-09-14 18:15:23,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:15:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-09-14 18:15:23,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-09-14 18:15:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:15:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-09-14 18:15:23,354 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 39 [2018-09-14 18:15:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:23,355 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-09-14 18:15:23,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:15:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-09-14 18:15:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-09-14 18:15:23,364 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:23,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:23,365 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:23,366 INFO L82 PathProgramCache]: Analyzing trace with hash -947150568, now seen corresponding path program 1 times [2018-09-14 18:15:23,366 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:23,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:23,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:23,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:23,368 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:23,658 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:23,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:15:23,658 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:23,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:23,660 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:23,661 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:15:23,661 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-09-14 18:15:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:33,031 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-09-14 18:15:33,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:33,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-09-14 18:15:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:33,056 INFO L225 Difference]: With dead ends: 4422 [2018-09-14 18:15:33,057 INFO L226 Difference]: Without dead ends: 2954 [2018-09-14 18:15:33,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:15:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-14 18:15:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-09-14 18:15:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-09-14 18:15:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-09-14 18:15:33,185 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 109 [2018-09-14 18:15:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:33,186 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-09-14 18:15:33,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-09-14 18:15:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-14 18:15:33,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:33,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:33,192 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1923837536, now seen corresponding path program 1 times [2018-09-14 18:15:33,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:33,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:33,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:33,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:33,197 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:33,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:33,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:15:33,475 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:33,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:15:33,476 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:15:33,476 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:15:33,477 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-09-14 18:15:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:41,980 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-09-14 18:15:41,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:41,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-09-14 18:15:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:42,033 INFO L225 Difference]: With dead ends: 10279 [2018-09-14 18:15:42,033 INFO L226 Difference]: Without dead ends: 7355 [2018-09-14 18:15:42,052 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 18:15:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-09-14 18:15:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-09-14 18:15:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-09-14 18:15:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-09-14 18:15:42,396 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 113 [2018-09-14 18:15:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:42,397 INFO L480 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-09-14 18:15:42,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:15:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-09-14 18:15:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-14 18:15:42,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:42,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:42,401 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash 397539053, now seen corresponding path program 1 times [2018-09-14 18:15:42,402 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:42,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:42,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:42,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:42,403 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:42,682 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:43,086 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:43,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:15:43,087 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:43,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:15:43,087 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:15:43,088 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:15:43,088 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-09-14 18:15:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:50,635 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-09-14 18:15:50,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:50,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-09-14 18:15:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:50,702 INFO L225 Difference]: With dead ends: 18993 [2018-09-14 18:15:50,702 INFO L226 Difference]: Without dead ends: 11703 [2018-09-14 18:15:50,742 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-09-14 18:15:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-09-14 18:15:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-09-14 18:15:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-09-14 18:15:51,176 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 134 [2018-09-14 18:15:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:51,177 INFO L480 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-09-14 18:15:51,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:15:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-09-14 18:15:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-14 18:15:51,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:51,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:51,183 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:51,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1776632544, now seen corresponding path program 1 times [2018-09-14 18:15:51,183 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:51,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:51,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:51,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:51,185 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:51,501 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:51,921 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:51,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:15:51,922 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:51,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:15:51,923 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:15:51,923 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:15:51,923 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 6 states. [2018-09-14 18:15:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:57,308 INFO L93 Difference]: Finished difference Result 27658 states and 38922 transitions. [2018-09-14 18:15:57,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:57,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-09-14 18:15:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:57,370 INFO L225 Difference]: With dead ends: 27658 [2018-09-14 18:15:57,371 INFO L226 Difference]: Without dead ends: 16025 [2018-09-14 18:15:57,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16025 states. [2018-09-14 18:15:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16025 to 15947. [2018-09-14 18:15:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15947 states. [2018-09-14 18:15:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15947 states to 15947 states and 19810 transitions. [2018-09-14 18:15:57,702 INFO L78 Accepts]: Start accepts. Automaton has 15947 states and 19810 transitions. Word has length 177 [2018-09-14 18:15:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:57,702 INFO L480 AbstractCegarLoop]: Abstraction has 15947 states and 19810 transitions. [2018-09-14 18:15:57,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:15:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 15947 states and 19810 transitions. [2018-09-14 18:15:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-14 18:15:57,708 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:57,708 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:57,709 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 952767299, now seen corresponding path program 1 times [2018-09-14 18:15:57,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:57,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:57,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:57,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:57,710 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:15:57,958 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:57,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:15:57,958 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:57,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:15:57,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:15:57,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:15:57,959 INFO L87 Difference]: Start difference. First operand 15947 states and 19810 transitions. Second operand 4 states. [2018-09-14 18:16:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:06,680 INFO L93 Difference]: Finished difference Result 60752 states and 78092 transitions. [2018-09-14 18:16:06,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:16:06,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2018-09-14 18:16:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:06,855 INFO L225 Difference]: With dead ends: 60752 [2018-09-14 18:16:06,856 INFO L226 Difference]: Without dead ends: 44811 [2018-09-14 18:16:06,920 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:16:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44811 states. [2018-09-14 18:16:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44811 to 44811. [2018-09-14 18:16:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44811 states. [2018-09-14 18:16:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44811 states to 44811 states and 55159 transitions. [2018-09-14 18:16:08,404 INFO L78 Accepts]: Start accepts. Automaton has 44811 states and 55159 transitions. Word has length 235 [2018-09-14 18:16:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:08,405 INFO L480 AbstractCegarLoop]: Abstraction has 44811 states and 55159 transitions. [2018-09-14 18:16:08,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:16:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 44811 states and 55159 transitions. [2018-09-14 18:16:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-09-14 18:16:08,430 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:08,430 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:08,431 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1249259458, now seen corresponding path program 1 times [2018-09-14 18:16:08,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:08,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:08,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:08,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:08,434 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:08,797 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:16:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:16:09,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:09,337 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 18:16:09,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:09,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:09,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:16:09,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:16:10,069 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:16:10,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-14 18:16:10,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:10,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:16:10,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:16:10,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:16:10,071 INFO L87 Difference]: Start difference. First operand 44811 states and 55159 transitions. Second operand 3 states. [2018-09-14 18:16:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:16,009 INFO L93 Difference]: Finished difference Result 89616 states and 110420 transitions. [2018-09-14 18:16:16,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:16:16,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2018-09-14 18:16:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:16,197 INFO L225 Difference]: With dead ends: 89616 [2018-09-14 18:16:16,198 INFO L226 Difference]: Without dead ends: 44811 [2018-09-14 18:16:16,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:16:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44811 states. [2018-09-14 18:16:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44811 to 42696. [2018-09-14 18:16:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42696 states. [2018-09-14 18:16:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42696 states to 42696 states and 51121 transitions. [2018-09-14 18:16:17,736 INFO L78 Accepts]: Start accepts. Automaton has 42696 states and 51121 transitions. Word has length 300 [2018-09-14 18:16:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:17,737 INFO L480 AbstractCegarLoop]: Abstraction has 42696 states and 51121 transitions. [2018-09-14 18:16:17,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:16:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 42696 states and 51121 transitions. [2018-09-14 18:16:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-09-14 18:16:17,843 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:17,844 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:17,844 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash 37590757, now seen corresponding path program 1 times [2018-09-14 18:16:17,844 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:17,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:17,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:17,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:17,847 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 282 proven. 72 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-09-14 18:16:18,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:18,760 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 18:16:18,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:18,776 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:18,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-14 18:16:19,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 282 proven. 72 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-09-14 18:16:20,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:20,406 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:16:20,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:20,425 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:20,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-14 18:16:21,104 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 282 proven. 72 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-09-14 18:16:21,540 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:21,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:16:21,541 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:21,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:16:21,544 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:16:21,544 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:16:21,544 INFO L87 Difference]: Start difference. First operand 42696 states and 51121 transitions. Second operand 9 states. [2018-09-14 18:16:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:31,572 INFO L93 Difference]: Finished difference Result 102802 states and 127292 transitions. [2018-09-14 18:16:31,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 18:16:31,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 635 [2018-09-14 18:16:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:31,770 INFO L225 Difference]: With dead ends: 102802 [2018-09-14 18:16:31,770 INFO L226 Difference]: Without dead ends: 60112 [2018-09-14 18:16:31,873 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2557 GetRequests, 2534 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:16:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60112 states. [2018-09-14 18:16:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60112 to 59867. [2018-09-14 18:16:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59867 states. [2018-09-14 18:16:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59867 states to 59867 states and 70168 transitions. [2018-09-14 18:16:32,772 INFO L78 Accepts]: Start accepts. Automaton has 59867 states and 70168 transitions. Word has length 635 [2018-09-14 18:16:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:32,773 INFO L480 AbstractCegarLoop]: Abstraction has 59867 states and 70168 transitions. [2018-09-14 18:16:32,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:16:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 59867 states and 70168 transitions. [2018-09-14 18:16:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-09-14 18:16:32,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:32,903 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:32,903 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:32,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1889234204, now seen corresponding path program 1 times [2018-09-14 18:16:32,904 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:32,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:32,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:32,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:32,905 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 197 proven. 223 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-14 18:16:35,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:35,095 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:35,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:35,104 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:35,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:36,352 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-14 18:16:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:16:37,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Forcibly destroying the process [2018-09-14 18:16:39,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:39,525 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:16:39,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:39,542 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:39,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:16:40,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:16:42,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:42,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6, 5, 5] total 23 [2018-09-14 18:16:42,571 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:42,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 18:16:42,573 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 18:16:42,573 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2018-09-14 18:16:42,573 INFO L87 Difference]: Start difference. First operand 59867 states and 70168 transitions. Second operand 17 states. [2018-09-14 18:16:44,359 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-09-14 18:16:49,460 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2018-09-14 18:17:11,890 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2018-09-14 18:17:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:12,219 INFO L93 Difference]: Finished difference Result 144789 states and 178582 transitions. [2018-09-14 18:17:12,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-14 18:17:12,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 804 [2018-09-14 18:17:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:12,503 INFO L225 Difference]: With dead ends: 144789 [2018-09-14 18:17:12,503 INFO L226 Difference]: Without dead ends: 81382 [2018-09-14 18:17:12,681 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3364 GetRequests, 3268 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1519, Invalid=7987, Unknown=0, NotChecked=0, Total=9506 [2018-09-14 18:17:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81382 states. [2018-09-14 18:17:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81382 to 79737. [2018-09-14 18:17:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79737 states. [2018-09-14 18:17:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79737 states to 79737 states and 88037 transitions. [2018-09-14 18:17:13,930 INFO L78 Accepts]: Start accepts. Automaton has 79737 states and 88037 transitions. Word has length 804 [2018-09-14 18:17:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:13,931 INFO L480 AbstractCegarLoop]: Abstraction has 79737 states and 88037 transitions. [2018-09-14 18:17:13,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 18:17:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 79737 states and 88037 transitions. [2018-09-14 18:17:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-09-14 18:17:14,103 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:14,104 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:14,105 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash 718993255, now seen corresponding path program 1 times [2018-09-14 18:17:14,105 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:14,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:14,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:14,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:14,107 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-14 18:17:15,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:15,452 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:17:15,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:15,710 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:15,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-14 18:17:16,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-14 18:17:17,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:17,588 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:17:17,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:17,604 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:18,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-14 18:17:18,475 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 610 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-09-14 18:17:19,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:19,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 18:17:19,456 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:19,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:17:19,458 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:17:19,458 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:17:19,458 INFO L87 Difference]: Start difference. First operand 79737 states and 88037 transitions. Second operand 7 states. [2018-09-14 18:17:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:27,837 INFO L93 Difference]: Finished difference Result 193125 states and 217266 transitions. [2018-09-14 18:17:27,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:17:27,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2018-09-14 18:17:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:28,220 INFO L225 Difference]: With dead ends: 193125 [2018-09-14 18:17:28,220 INFO L226 Difference]: Without dead ends: 113394 [2018-09-14 18:17:28,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3856 GetRequests, 3836 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:17:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113394 states. [2018-09-14 18:17:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113394 to 112656. [2018-09-14 18:17:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112656 states. [2018-09-14 18:17:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112656 states to 112656 states and 126043 transitions. [2018-09-14 18:17:30,640 INFO L78 Accepts]: Start accepts. Automaton has 112656 states and 126043 transitions. Word has length 960 [2018-09-14 18:17:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:30,642 INFO L480 AbstractCegarLoop]: Abstraction has 112656 states and 126043 transitions. [2018-09-14 18:17:30,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:17:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 112656 states and 126043 transitions. [2018-09-14 18:17:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-09-14 18:17:30,827 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:30,828 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:30,828 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1036098031, now seen corresponding path program 1 times [2018-09-14 18:17:30,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:30,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:30,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:30,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:30,830 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 355 proven. 170 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2018-09-14 18:17:31,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:31,732 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:17:31,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:31,741 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:31,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 965 proven. 2 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-09-14 18:17:33,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 355 proven. 170 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2018-09-14 18:17:33,670 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:33,671 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:17:33,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:33,687 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:34,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 965 proven. 2 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-09-14 18:17:34,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 355 proven. 170 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2018-09-14 18:17:35,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:35,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:17:35,432 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:35,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:17:35,436 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:17:35,436 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:17:35,437 INFO L87 Difference]: Start difference. First operand 112656 states and 126043 transitions. Second operand 9 states. [2018-09-14 18:17:56,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:56,124 INFO L93 Difference]: Finished difference Result 243397 states and 305727 transitions. [2018-09-14 18:17:56,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-14 18:17:56,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 964 [2018-09-14 18:17:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:56,679 INFO L225 Difference]: With dead ends: 243397 [2018-09-14 18:17:56,679 INFO L226 Difference]: Without dead ends: 115985 [2018-09-14 18:17:57,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3940 GetRequests, 3881 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=661, Invalid=2879, Unknown=0, NotChecked=0, Total=3540 [2018-09-14 18:17:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115985 states. [2018-09-14 18:17:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115985 to 109264. [2018-09-14 18:17:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109264 states. [2018-09-14 18:18:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109264 states to 109264 states and 123383 transitions. [2018-09-14 18:18:00,015 INFO L78 Accepts]: Start accepts. Automaton has 109264 states and 123383 transitions. Word has length 964 [2018-09-14 18:18:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:00,016 INFO L480 AbstractCegarLoop]: Abstraction has 109264 states and 123383 transitions. [2018-09-14 18:18:00,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:18:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 109264 states and 123383 transitions. [2018-09-14 18:18:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-09-14 18:18:00,258 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:00,259 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:18:00,259 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash 846665667, now seen corresponding path program 1 times [2018-09-14 18:18:00,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:00,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:00,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:00,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:00,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 824 proven. 2 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-09-14 18:18:01,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:01,543 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 18:18:01,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:01,551 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:01,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 824 proven. 2 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-09-14 18:18:02,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 824 proven. 2 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-09-14 18:18:03,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:03,886 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 18:18:03,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:03,904 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:04,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 824 proven. 2 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-09-14 18:18:04,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 824 proven. 2 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-09-14 18:18:05,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:18:05,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:18:05,803 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:18:05,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:18:05,805 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:18:05,805 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:18:05,805 INFO L87 Difference]: Start difference. First operand 109264 states and 123383 transitions. Second operand 9 states. [2018-09-14 18:18:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:16,480 INFO L93 Difference]: Finished difference Result 220274 states and 248873 transitions. [2018-09-14 18:18:16,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:18:16,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1007 [2018-09-14 18:18:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:16,762 INFO L225 Difference]: With dead ends: 220274 [2018-09-14 18:18:16,763 INFO L226 Difference]: Without dead ends: 94278 [2018-09-14 18:18:17,038 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4046 GetRequests, 4019 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:18:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94278 states. [2018-09-14 18:18:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94278 to 93470. [2018-09-14 18:18:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93470 states. [2018-09-14 18:18:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93470 states to 93470 states and 101969 transitions. [2018-09-14 18:18:18,202 INFO L78 Accepts]: Start accepts. Automaton has 93470 states and 101969 transitions. Word has length 1007 [2018-09-14 18:18:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:18,204 INFO L480 AbstractCegarLoop]: Abstraction has 93470 states and 101969 transitions. [2018-09-14 18:18:18,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:18:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 93470 states and 101969 transitions. [2018-09-14 18:18:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2018-09-14 18:18:18,318 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:18,319 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:18,319 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1151262318, now seen corresponding path program 1 times [2018-09-14 18:18:18,319 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:18,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:18,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:18,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:18,321 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 785 proven. 531 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:18:23,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:23,965 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 18:18:23,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:23,972 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:24,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2018-09-14 18:18:24,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2018-09-14 18:18:25,293 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:18:25,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-09-14 18:18:25,294 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:18:25,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:18:25,295 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:18:25,295 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:18:25,295 INFO L87 Difference]: Start difference. First operand 93470 states and 101969 transitions. Second operand 3 states. [2018-09-14 18:18:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:28,809 INFO L93 Difference]: Finished difference Result 186934 states and 203932 transitions. [2018-09-14 18:18:28,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:18:28,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1143 [2018-09-14 18:18:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:29,025 INFO L225 Difference]: With dead ends: 186934 [2018-09-14 18:18:29,026 INFO L226 Difference]: Without dead ends: 93470 [2018-09-14 18:18:29,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2305 GetRequests, 2289 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:18:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93470 states. [2018-09-14 18:18:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93470 to 92790. [2018-09-14 18:18:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92790 states. [2018-09-14 18:18:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92790 states to 92790 states and 99985 transitions. [2018-09-14 18:18:30,628 INFO L78 Accepts]: Start accepts. Automaton has 92790 states and 99985 transitions. Word has length 1143 [2018-09-14 18:18:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:30,629 INFO L480 AbstractCegarLoop]: Abstraction has 92790 states and 99985 transitions. [2018-09-14 18:18:30,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:18:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 92790 states and 99985 transitions. [2018-09-14 18:18:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1326 [2018-09-14 18:18:30,738 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:30,738 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:18:30,739 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:30,739 INFO L82 PathProgramCache]: Analyzing trace with hash 557676889, now seen corresponding path program 1 times [2018-09-14 18:18:30,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:30,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:30,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:30,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:30,740 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2018-09-14 18:18:32,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:18:32,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:18:32,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:18:32,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:18:32,656 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:18:32,656 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:18:32,657 INFO L87 Difference]: Start difference. First operand 92790 states and 99985 transitions. Second operand 4 states. [2018-09-14 18:18:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:38,581 INFO L93 Difference]: Finished difference Result 235797 states and 255483 transitions. [2018-09-14 18:18:38,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:18:38,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1325 [2018-09-14 18:18:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:38,586 INFO L225 Difference]: With dead ends: 235797 [2018-09-14 18:18:38,586 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 18:18:38,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:18:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 18:18:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 18:18:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 18:18:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 18:18:38,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1325 [2018-09-14 18:18:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:38,834 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 18:18:38,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:18:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 18:18:38,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 18:18:38,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2018-09-14 18:18:39,071 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-14 18:18:39,073 INFO L168 Benchmark]: Toolchain (without parser) took 219102.26 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -849.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,074 INFO L168 Benchmark]: CDTParser took 0.20 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 18:18:39,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1820.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 189.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,076 INFO L168 Benchmark]: Boogie Preprocessor took 579.53 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,077 INFO L168 Benchmark]: RCFGBuilder took 8885.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.3 MB). Peak memory consumption was 490.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,078 INFO L168 Benchmark]: TraceAbstraction took 207620.05 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -465.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:18:39,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1820.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 189.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 579.53 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8885.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 490.3 MB). Peak memory consumption was 490.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207620.05 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -465.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label44_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-18-39-101.csv Completed graceful shutdown