java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:50:52,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:50:52,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:50:52,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:50:52,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:50:52,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:50:52,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:50:52,057 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:50:52,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:50:52,060 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:50:52,061 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:50:52,061 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:50:52,062 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:50:52,063 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:50:52,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:50:52,065 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:50:52,066 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:50:52,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:50:52,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:50:52,072 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:50:52,073 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:50:52,074 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:50:52,077 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:50:52,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:50:52,078 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:50:52,079 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:50:52,082 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:50:52,083 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:50:52,084 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:50:52,085 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:50:52,086 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:50:52,086 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:50:52,086 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:50:52,087 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:50:52,088 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:50:52,088 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:50:52,089 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:50:52,115 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:50:52,116 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:50:52,117 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:50:52,117 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:50:52,117 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:50:52,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:50:52,118 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:50:52,118 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:50:52,118 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:50:52,118 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:50:52,119 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:50:52,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:50:52,120 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:50:52,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:50:52,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:50:52,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:50:52,121 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:50:52,121 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:50:52,121 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:50:52,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:50:52,122 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:50:52,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:50:52,122 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:50:52,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:50:52,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:50:52,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:50:52,123 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:50:52,123 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:50:52,124 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:50:52,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:50:52,124 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:50:52,124 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:50:52,124 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:50:52,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:50:52,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:50:52,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:50:52,196 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:50:52,196 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:50:52,197 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-09-14 17:50:52,594 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd38ed83/fb37a81a8ae94c709c08bd307d722907/FLAGab9f5088e [2018-09-14 17:50:52,950 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:50:52,951 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label59_true-unreach-call.c [2018-09-14 17:50:52,973 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd38ed83/fb37a81a8ae94c709c08bd307d722907/FLAGab9f5088e [2018-09-14 17:50:52,989 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd38ed83/fb37a81a8ae94c709c08bd307d722907 [2018-09-14 17:50:53,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:50:53,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:50:53,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:50:53,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:50:53,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:50:53,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:50:52" (1/1) ... [2018-09-14 17:50:53,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7008f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:53, skipping insertion in model container [2018-09-14 17:50:53,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:50:52" (1/1) ... [2018-09-14 17:50:53,027 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:50:53,812 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:50:53,831 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:50:54,137 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:50:54,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54 WrapperNode [2018-09-14 17:50:54,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:50:54,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:50:54,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:50:54,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:50:54,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:54,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:54,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:50:54,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:50:54,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:50:54,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:50:54,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:54,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:55,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:50:55,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:50:55,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:50:55,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:50:55,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:50:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:50:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:50:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:50:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:50:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:50:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:50:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:50:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:50:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:50:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:51:04,914 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:51:04,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:51:04 BoogieIcfgContainer [2018-09-14 17:51:04,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:51:04,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:51:04,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:51:04,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:51:04,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:50:52" (1/3) ... [2018-09-14 17:51:04,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5346552a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:51:04, skipping insertion in model container [2018-09-14 17:51:04,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54" (2/3) ... [2018-09-14 17:51:04,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5346552a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:51:04, skipping insertion in model container [2018-09-14 17:51:04,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:51:04" (3/3) ... [2018-09-14 17:51:04,924 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label59_true-unreach-call.c [2018-09-14 17:51:04,934 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:51:04,942 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:51:05,009 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:51:05,010 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:51:05,010 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:51:05,010 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:51:05,010 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:51:05,011 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:51:05,011 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:51:05,011 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:51:05,011 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:51:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-14 17:51:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-14 17:51:05,062 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:05,063 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:51:05,064 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:05,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1120743887, now seen corresponding path program 1 times [2018-09-14 17:51:05,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:05,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:05,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:05,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:05,120 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:05,632 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 17:51:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:05,702 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:05,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:51:05,703 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:05,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:51:05,725 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:51:05,726 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:05,729 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-14 17:51:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:16,194 INFO L93 Difference]: Finished difference Result 1557 states and 2848 transitions. [2018-09-14 17:51:16,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:51:16,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-14 17:51:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:16,226 INFO L225 Difference]: With dead ends: 1557 [2018-09-14 17:51:16,226 INFO L226 Difference]: Without dead ends: 1113 [2018-09-14 17:51:16,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2018-09-14 17:51:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 758. [2018-09-14 17:51:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2018-09-14 17:51:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1354 transitions. [2018-09-14 17:51:16,355 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1354 transitions. Word has length 61 [2018-09-14 17:51:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:16,356 INFO L480 AbstractCegarLoop]: Abstraction has 758 states and 1354 transitions. [2018-09-14 17:51:16,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:51:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1354 transitions. [2018-09-14 17:51:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 17:51:16,364 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:16,364 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:51:16,365 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:16,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1471271461, now seen corresponding path program 1 times [2018-09-14 17:51:16,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:16,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:16,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:16,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:16,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:16,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:16,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:51:16,718 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:16,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:51:16,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:51:16,721 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:51:16,721 INFO L87 Difference]: Start difference. First operand 758 states and 1354 transitions. Second operand 5 states. [2018-09-14 17:51:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:33,666 INFO L93 Difference]: Finished difference Result 2503 states and 4574 transitions. [2018-09-14 17:51:33,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:33,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-09-14 17:51:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:33,681 INFO L225 Difference]: With dead ends: 2503 [2018-09-14 17:51:33,681 INFO L226 Difference]: Without dead ends: 1751 [2018-09-14 17:51:33,686 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:51:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2018-09-14 17:51:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1731. [2018-09-14 17:51:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-09-14 17:51:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 3005 transitions. [2018-09-14 17:51:33,777 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 3005 transitions. Word has length 131 [2018-09-14 17:51:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:33,778 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 3005 transitions. [2018-09-14 17:51:33,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:51:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 3005 transitions. [2018-09-14 17:51:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:51:33,789 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:33,789 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:51:33,789 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash -708902120, now seen corresponding path program 1 times [2018-09-14 17:51:33,790 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:33,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:33,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:33,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:33,792 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:34,301 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:34,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:34,301 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:34,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:34,304 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:34,304 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:34,305 INFO L87 Difference]: Start difference. First operand 1731 states and 3005 transitions. Second operand 6 states. [2018-09-14 17:51:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:48,428 INFO L93 Difference]: Finished difference Result 5409 states and 10014 transitions. [2018-09-14 17:51:48,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:51:48,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-14 17:51:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:48,460 INFO L225 Difference]: With dead ends: 5409 [2018-09-14 17:51:48,460 INFO L226 Difference]: Without dead ends: 3684 [2018-09-14 17:51:48,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:51:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2018-09-14 17:51:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3593. [2018-09-14 17:51:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2018-09-14 17:51:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5519 transitions. [2018-09-14 17:51:48,648 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5519 transitions. Word has length 132 [2018-09-14 17:51:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:48,650 INFO L480 AbstractCegarLoop]: Abstraction has 3593 states and 5519 transitions. [2018-09-14 17:51:48,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5519 transitions. [2018-09-14 17:51:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-14 17:51:48,655 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:48,655 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:51:48,656 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:48,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1451874528, now seen corresponding path program 1 times [2018-09-14 17:51:48,656 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:48,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:48,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:48,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:48,657 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:48,965 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:51:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:49,285 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:49,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:49,286 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:49,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:49,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:49,287 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:49,287 INFO L87 Difference]: Start difference. First operand 3593 states and 5519 transitions. Second operand 6 states. [2018-09-14 17:51:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:55,791 INFO L93 Difference]: Finished difference Result 10285 states and 17044 transitions. [2018-09-14 17:51:55,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:55,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-14 17:51:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:55,838 INFO L225 Difference]: With dead ends: 10285 [2018-09-14 17:51:55,839 INFO L226 Difference]: Without dead ends: 7007 [2018-09-14 17:51:55,871 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:51:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2018-09-14 17:51:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6952. [2018-09-14 17:51:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6952 states. [2018-09-14 17:51:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6952 states to 6952 states and 10130 transitions. [2018-09-14 17:51:56,063 INFO L78 Accepts]: Start accepts. Automaton has 6952 states and 10130 transitions. Word has length 136 [2018-09-14 17:51:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:56,063 INFO L480 AbstractCegarLoop]: Abstraction has 6952 states and 10130 transitions. [2018-09-14 17:51:56,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 6952 states and 10130 transitions. [2018-09-14 17:51:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-14 17:51:56,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:56,068 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:51:56,068 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1453868313, now seen corresponding path program 1 times [2018-09-14 17:51:56,069 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:56,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:56,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:56,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:56,070 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:56,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:51:56,277 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:51:56,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:56,287 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:51:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:56,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:00,812 WARN L178 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 37 [2018-09-14 17:52:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:03,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:03,635 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:52:03,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-14 17:52:03,635 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:03,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:52:03,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:52:03,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-14 17:52:03,637 INFO L87 Difference]: Start difference. First operand 6952 states and 10130 transitions. Second operand 3 states. [2018-09-14 17:52:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:10,864 INFO L93 Difference]: Finished difference Result 14844 states and 22694 transitions. [2018-09-14 17:52:10,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:52:10,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2018-09-14 17:52:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:10,914 INFO L225 Difference]: With dead ends: 14844 [2018-09-14 17:52:10,914 INFO L226 Difference]: Without dead ends: 8207 [2018-09-14 17:52:10,964 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 310 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-14 17:52:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2018-09-14 17:52:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 8198. [2018-09-14 17:52:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8198 states. [2018-09-14 17:52:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8198 states to 8198 states and 12353 transitions. [2018-09-14 17:52:11,209 INFO L78 Accepts]: Start accepts. Automaton has 8198 states and 12353 transitions. Word has length 157 [2018-09-14 17:52:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:11,209 INFO L480 AbstractCegarLoop]: Abstraction has 8198 states and 12353 transitions. [2018-09-14 17:52:11,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:52:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8198 states and 12353 transitions. [2018-09-14 17:52:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-14 17:52:11,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:11,221 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:52:11,221 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1908896947, now seen corresponding path program 1 times [2018-09-14 17:52:11,222 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:11,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:11,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:11,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:11,223 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:11,841 WARN L178 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-09-14 17:52:12,180 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 17:52:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:12,521 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:52:12,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:52:12,522 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:12,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:52:12,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:52:12,523 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:52:12,523 INFO L87 Difference]: Start difference. First operand 8198 states and 12353 transitions. Second operand 6 states. [2018-09-14 17:52:12,761 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:52:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:27,654 INFO L93 Difference]: Finished difference Result 16784 states and 26368 transitions. [2018-09-14 17:52:27,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 17:52:27,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-09-14 17:52:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:27,718 INFO L225 Difference]: With dead ends: 16784 [2018-09-14 17:52:27,718 INFO L226 Difference]: Without dead ends: 8901 [2018-09-14 17:52:27,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:52:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2018-09-14 17:52:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 8745. [2018-09-14 17:52:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8745 states. [2018-09-14 17:52:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 13186 transitions. [2018-09-14 17:52:28,025 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 13186 transitions. Word has length 229 [2018-09-14 17:52:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:28,026 INFO L480 AbstractCegarLoop]: Abstraction has 8745 states and 13186 transitions. [2018-09-14 17:52:28,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:52:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 13186 transitions. [2018-09-14 17:52:28,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-09-14 17:52:28,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:28,053 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:52:28,053 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:28,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2118867734, now seen corresponding path program 1 times [2018-09-14 17:52:28,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:28,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:28,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:28,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:28,064 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:28,353 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:52:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:52:28,797 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:28,797 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:52:28,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:28,817 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:28,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-14 17:52:29,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:29,602 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:52:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:52:30,263 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:52:30,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:52:30,264 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:30,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:52:30,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:52:30,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:52:30,266 INFO L87 Difference]: Start difference. First operand 8745 states and 13186 transitions. Second operand 5 states. [2018-09-14 17:52:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:38,706 INFO L93 Difference]: Finished difference Result 23270 states and 37409 transitions. [2018-09-14 17:52:38,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:52:38,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2018-09-14 17:52:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:38,789 INFO L225 Difference]: With dead ends: 23270 [2018-09-14 17:52:38,789 INFO L226 Difference]: Without dead ends: 14839 [2018-09-14 17:52:38,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 525 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:52:38,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14839 states. [2018-09-14 17:52:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14839 to 13849. [2018-09-14 17:52:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13849 states. [2018-09-14 17:52:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 20302 transitions. [2018-09-14 17:52:39,251 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 20302 transitions. Word has length 265 [2018-09-14 17:52:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:39,251 INFO L480 AbstractCegarLoop]: Abstraction has 13849 states and 20302 transitions. [2018-09-14 17:52:39,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:52:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 20302 transitions. [2018-09-14 17:52:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-14 17:52:39,267 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:39,267 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:52:39,268 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash -609418555, now seen corresponding path program 1 times [2018-09-14 17:52:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:39,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:39,269 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 109 proven. 89 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 17:52:39,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:39,749 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:52:39,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:39,757 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:39,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:52:40,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:52:40,331 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:52:40,331 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 17:52:40,331 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:40,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:52:40,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:52:40,332 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:52:40,333 INFO L87 Difference]: Start difference. First operand 13849 states and 20302 transitions. Second operand 5 states. [2018-09-14 17:52:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:45,010 INFO L93 Difference]: Finished difference Result 29505 states and 44556 transitions. [2018-09-14 17:52:45,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:52:45,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2018-09-14 17:52:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:45,032 INFO L225 Difference]: With dead ends: 29505 [2018-09-14 17:52:45,032 INFO L226 Difference]: Without dead ends: 6109 [2018-09-14 17:52:45,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 546 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:52:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2018-09-14 17:52:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 5755. [2018-09-14 17:52:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2018-09-14 17:52:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 6774 transitions. [2018-09-14 17:52:45,238 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 6774 transitions. Word has length 274 [2018-09-14 17:52:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:45,239 INFO L480 AbstractCegarLoop]: Abstraction has 5755 states and 6774 transitions. [2018-09-14 17:52:45,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:52:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 6774 transitions. [2018-09-14 17:52:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-14 17:52:45,245 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:45,245 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:52:45,246 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:45,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1233054540, now seen corresponding path program 1 times [2018-09-14 17:52:45,246 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:45,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:45,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:45,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:45,248 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:45,898 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-09-14 17:52:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:46,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:46,130 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 17:52:46,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:46,139 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:46,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:52,451 WARN L178 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-14 17:52:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:52,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:55,067 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2018-09-14 17:52:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:56,394 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:52:56,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 17:52:56,395 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:56,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:52:56,396 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:52:56,396 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-14 17:52:56,396 INFO L87 Difference]: Start difference. First operand 5755 states and 6774 transitions. Second operand 6 states. [2018-09-14 17:53:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:07,445 INFO L93 Difference]: Finished difference Result 15248 states and 17877 transitions. [2018-09-14 17:53:07,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:53:07,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 299 [2018-09-14 17:53:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:07,467 INFO L225 Difference]: With dead ends: 15248 [2018-09-14 17:53:07,468 INFO L226 Difference]: Without dead ends: 9185 [2018-09-14 17:53:07,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-14 17:53:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9185 states. [2018-09-14 17:53:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9185 to 8867. [2018-09-14 17:53:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8867 states. [2018-09-14 17:53:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 10355 transitions. [2018-09-14 17:53:07,620 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 10355 transitions. Word has length 299 [2018-09-14 17:53:07,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:07,620 INFO L480 AbstractCegarLoop]: Abstraction has 8867 states and 10355 transitions. [2018-09-14 17:53:07,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:53:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 10355 transitions. [2018-09-14 17:53:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-14 17:53:07,626 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:07,626 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:53:07,627 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2081764732, now seen corresponding path program 1 times [2018-09-14 17:53:07,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:07,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:07,628 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:07,975 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:53:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:08,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:08,760 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:08,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:08,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:08,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:09,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:09,143 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:53:09,143 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 17:53:09,143 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:53:09,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:53:09,144 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:53:09,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:53:09,144 INFO L87 Difference]: Start difference. First operand 8867 states and 10355 transitions. Second operand 3 states. [2018-09-14 17:53:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:10,853 INFO L93 Difference]: Finished difference Result 17728 states and 20760 transitions. [2018-09-14 17:53:10,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:53:10,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2018-09-14 17:53:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:10,890 INFO L225 Difference]: With dead ends: 17728 [2018-09-14 17:53:10,890 INFO L226 Difference]: Without dead ends: 8867 [2018-09-14 17:53:10,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 671 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:53:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2018-09-14 17:53:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 8864. [2018-09-14 17:53:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8864 states. [2018-09-14 17:53:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 10150 transitions. [2018-09-14 17:53:11,066 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 10150 transitions. Word has length 336 [2018-09-14 17:53:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:11,067 INFO L480 AbstractCegarLoop]: Abstraction has 8864 states and 10150 transitions. [2018-09-14 17:53:11,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:53:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 10150 transitions. [2018-09-14 17:53:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-09-14 17:53:11,089 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:11,089 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:53:11,090 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2133464088, now seen corresponding path program 1 times [2018-09-14 17:53:11,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:11,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:11,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:11,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:11,092 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:11,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:11,893 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 17:53:11,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:11,904 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:12,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:12,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:13,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:13,288 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 17:53:13,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:13,305 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:13,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:14,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:14,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:14,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:53:14,632 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:14,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:53:14,635 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:53:14,635 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:53:14,635 INFO L87 Difference]: Start difference. First operand 8864 states and 10150 transitions. Second operand 9 states. [2018-09-14 17:53:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:19,385 INFO L93 Difference]: Finished difference Result 21748 states and 26229 transitions. [2018-09-14 17:53:19,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:53:19,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 548 [2018-09-14 17:53:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:19,422 INFO L225 Difference]: With dead ends: 21748 [2018-09-14 17:53:19,422 INFO L226 Difference]: Without dead ends: 12890 [2018-09-14 17:53:19,438 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2211 GetRequests, 2187 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:53:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2018-09-14 17:53:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 12536. [2018-09-14 17:53:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12536 states. [2018-09-14 17:53:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12536 states to 12536 states and 14530 transitions. [2018-09-14 17:53:19,676 INFO L78 Accepts]: Start accepts. Automaton has 12536 states and 14530 transitions. Word has length 548 [2018-09-14 17:53:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:19,677 INFO L480 AbstractCegarLoop]: Abstraction has 12536 states and 14530 transitions. [2018-09-14 17:53:19,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:53:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 12536 states and 14530 transitions. [2018-09-14 17:53:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-09-14 17:53:19,713 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:19,714 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-09-14 17:53:19,714 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:19,714 INFO L82 PathProgramCache]: Analyzing trace with hash -34962319, now seen corresponding path program 1 times [2018-09-14 17:53:19,715 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:19,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:19,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:19,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:19,716 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 635 proven. 91 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-09-14 17:53:20,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:20,780 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 17:53:20,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:20,789 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:20,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-09-14 17:53:21,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2018-09-14 17:53:21,807 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:53:21,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-14 17:53:21,808 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:53:21,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:53:21,809 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:53:21,810 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:53:21,810 INFO L87 Difference]: Start difference. First operand 12536 states and 14530 transitions. Second operand 3 states. [2018-09-14 17:53:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:23,352 INFO L93 Difference]: Finished difference Result 26953 states and 31519 transitions. [2018-09-14 17:53:23,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:53:23,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 704 [2018-09-14 17:53:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:23,390 INFO L225 Difference]: With dead ends: 26953 [2018-09-14 17:53:23,390 INFO L226 Difference]: Without dead ends: 14423 [2018-09-14 17:53:23,412 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:53:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14423 states. [2018-09-14 17:53:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14423 to 12220. [2018-09-14 17:53:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12220 states. [2018-09-14 17:53:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12220 states to 12220 states and 14213 transitions. [2018-09-14 17:53:23,682 INFO L78 Accepts]: Start accepts. Automaton has 12220 states and 14213 transitions. Word has length 704 [2018-09-14 17:53:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:23,683 INFO L480 AbstractCegarLoop]: Abstraction has 12220 states and 14213 transitions. [2018-09-14 17:53:23,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:53:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 12220 states and 14213 transitions. [2018-09-14 17:53:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2018-09-14 17:53:23,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:23,707 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:53:23,708 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1984959337, now seen corresponding path program 1 times [2018-09-14 17:53:23,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:23,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:23,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:23,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:23,712 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 528 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:53:25,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:25,269 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:25,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:25,278 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:25,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-14 17:53:26,142 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 162 proven. 360 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-09-14 17:53:27,809 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:53:27,809 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-14 17:53:27,809 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:53:27,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:53:27,810 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:53:27,810 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:53:27,810 INFO L87 Difference]: Start difference. First operand 12220 states and 14213 transitions. Second operand 5 states. [2018-09-14 17:53:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:32,327 INFO L93 Difference]: Finished difference Result 24483 states and 28693 transitions. [2018-09-14 17:53:32,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:53:32,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 717 [2018-09-14 17:53:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:32,362 INFO L225 Difference]: With dead ends: 24483 [2018-09-14 17:53:32,363 INFO L226 Difference]: Without dead ends: 12269 [2018-09-14 17:53:32,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1446 GetRequests, 1428 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:53:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12269 states. [2018-09-14 17:53:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12269 to 12230. [2018-09-14 17:53:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12230 states. [2018-09-14 17:53:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12230 states to 12230 states and 14242 transitions. [2018-09-14 17:53:32,674 INFO L78 Accepts]: Start accepts. Automaton has 12230 states and 14242 transitions. Word has length 717 [2018-09-14 17:53:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:32,675 INFO L480 AbstractCegarLoop]: Abstraction has 12230 states and 14242 transitions. [2018-09-14 17:53:32,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:53:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12230 states and 14242 transitions. [2018-09-14 17:53:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-09-14 17:53:32,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:32,707 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:53:32,707 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash -184172754, now seen corresponding path program 1 times [2018-09-14 17:53:32,710 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:32,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:32,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:32,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:32,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-09-14 17:53:33,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:33,877 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:33,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:33,886 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:34,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-09-14 17:53:34,712 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-09-14 17:53:35,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:35,304 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:53:35,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:35,321 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:35,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-09-14 17:53:36,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-09-14 17:53:37,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:37,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:53:37,083 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:37,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:53:37,086 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:53:37,086 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:53:37,087 INFO L87 Difference]: Start difference. First operand 12230 states and 14242 transitions. Second operand 9 states. [2018-09-14 17:53:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:40,363 INFO L93 Difference]: Finished difference Result 23993 states and 27666 transitions. [2018-09-14 17:53:40,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:53:40,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 816 [2018-09-14 17:53:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:40,390 INFO L225 Difference]: With dead ends: 23993 [2018-09-14 17:53:40,390 INFO L226 Difference]: Without dead ends: 12077 [2018-09-14 17:53:40,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3282 GetRequests, 3260 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:53:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2018-09-14 17:53:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 11106. [2018-09-14 17:53:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11106 states. [2018-09-14 17:53:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11106 states to 11106 states and 11976 transitions. [2018-09-14 17:53:40,586 INFO L78 Accepts]: Start accepts. Automaton has 11106 states and 11976 transitions. Word has length 816 [2018-09-14 17:53:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:40,587 INFO L480 AbstractCegarLoop]: Abstraction has 11106 states and 11976 transitions. [2018-09-14 17:53:40,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:53:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 11106 states and 11976 transitions. [2018-09-14 17:53:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-09-14 17:53:40,607 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:40,608 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, 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, 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, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:53:40,609 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1856714867, now seen corresponding path program 1 times [2018-09-14 17:53:40,609 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:40,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:40,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:40,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:40,611 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 360 proven. 6 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2018-09-14 17:53:41,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:41,473 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:41,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:41,485 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:41,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 969 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-09-14 17:53:42,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 360 proven. 6 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2018-09-14 17:53:42,704 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:53:42,705 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-14 17:53:42,705 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:53:42,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:53:42,706 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:53:42,706 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:53:42,706 INFO L87 Difference]: Start difference. First operand 11106 states and 11976 transitions. Second operand 3 states. [2018-09-14 17:53:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:44,605 INFO L93 Difference]: Finished difference Result 22204 states and 23997 transitions. [2018-09-14 17:53:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:53:44,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 849 [2018-09-14 17:53:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:44,629 INFO L225 Difference]: With dead ends: 22204 [2018-09-14 17:53:44,630 INFO L226 Difference]: Without dead ends: 11412 [2018-09-14 17:53:44,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 1698 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 17:53:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2018-09-14 17:53:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 11104. [2018-09-14 17:53:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11104 states. [2018-09-14 17:53:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11104 states to 11104 states and 11967 transitions. [2018-09-14 17:53:44,835 INFO L78 Accepts]: Start accepts. Automaton has 11104 states and 11967 transitions. Word has length 849 [2018-09-14 17:53:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:44,836 INFO L480 AbstractCegarLoop]: Abstraction has 11104 states and 11967 transitions. [2018-09-14 17:53:44,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:53:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 11104 states and 11967 transitions. [2018-09-14 17:53:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-09-14 17:53:44,859 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:44,860 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:53:44,860 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash -756463274, now seen corresponding path program 1 times [2018-09-14 17:53:44,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:44,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:44,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:44,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:44,863 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 697 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:45,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:45,840 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:45,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:45,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:46,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 697 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:46,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 697 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:46,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:46,990 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:53:47,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:47,005 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:47,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 697 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:47,879 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 697 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:48,283 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:48,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 17:53:48,284 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:48,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:53:48,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:53:48,286 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:53:48,286 INFO L87 Difference]: Start difference. First operand 11104 states and 11967 transitions. Second operand 7 states. [2018-09-14 17:53:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:53,172 INFO L93 Difference]: Finished difference Result 26908 states and 29239 transitions. [2018-09-14 17:53:53,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 17:53:53,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 851 [2018-09-14 17:53:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:53,214 INFO L225 Difference]: With dead ends: 26908 [2018-09-14 17:53:53,214 INFO L226 Difference]: Without dead ends: 16118 [2018-09-14 17:53:53,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3416 GetRequests, 3400 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:53:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16118 states. [2018-09-14 17:53:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16118 to 16086. [2018-09-14 17:53:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16086 states. [2018-09-14 17:53:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16086 states to 16086 states and 17278 transitions. [2018-09-14 17:53:53,482 INFO L78 Accepts]: Start accepts. Automaton has 16086 states and 17278 transitions. Word has length 851 [2018-09-14 17:53:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:53,484 INFO L480 AbstractCegarLoop]: Abstraction has 16086 states and 17278 transitions. [2018-09-14 17:53:53,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:53:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 16086 states and 17278 transitions. [2018-09-14 17:53:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2018-09-14 17:53:53,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:53,502 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:53:53,502 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1908767632, now seen corresponding path program 1 times [2018-09-14 17:53:53,503 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:53,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:53,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:53,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:53,504 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:54,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:54,987 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:53:54,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:54,994 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:55,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:55,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:56,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:56,812 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:53:56,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:56,828 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:57,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:58,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 775 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:53:59,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:59,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 8, 9] total 20 [2018-09-14 17:53:59,508 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:59,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 17:53:59,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 17:53:59,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:53:59,511 INFO L87 Difference]: Start difference. First operand 16086 states and 17278 transitions. Second operand 12 states. [2018-09-14 17:54:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:54:07,212 INFO L93 Difference]: Finished difference Result 31896 states and 34283 transitions. [2018-09-14 17:54:07,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-14 17:54:07,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 889 [2018-09-14 17:54:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:54:07,244 INFO L225 Difference]: With dead ends: 31896 [2018-09-14 17:54:07,245 INFO L226 Difference]: Without dead ends: 16124 [2018-09-14 17:54:07,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3600 GetRequests, 3555 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 17:54:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2018-09-14 17:54:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16098. [2018-09-14 17:54:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16098 states. [2018-09-14 17:54:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16098 states to 16098 states and 17112 transitions. [2018-09-14 17:54:07,477 INFO L78 Accepts]: Start accepts. Automaton has 16098 states and 17112 transitions. Word has length 889 [2018-09-14 17:54:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:54:07,478 INFO L480 AbstractCegarLoop]: Abstraction has 16098 states and 17112 transitions. [2018-09-14 17:54:07,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 17:54:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16098 states and 17112 transitions. [2018-09-14 17:54:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2018-09-14 17:54:07,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:54:07,491 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:54:07,491 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:54:07,491 INFO L82 PathProgramCache]: Analyzing trace with hash 405847074, now seen corresponding path program 1 times [2018-09-14 17:54:07,492 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:54:07,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:07,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:07,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:07,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:54:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:08,489 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-09-14 17:54:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2018-09-14 17:54:09,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:54:09,641 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:54:09,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:09,652 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:54:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:09,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:54:16,005 WARN L178 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-14 17:54:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2018-09-14 17:54:16,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:54:18,583 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 35 DAG size of output: 13 [2018-09-14 17:54:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2018-09-14 17:54:23,966 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:54:23,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 17:54:23,967 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:54:23,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:54:23,968 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:54:23,968 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:54:23,968 INFO L87 Difference]: Start difference. First operand 16098 states and 17112 transitions. Second operand 6 states. [2018-09-14 17:54:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:54:35,731 INFO L93 Difference]: Finished difference Result 32806 states and 34938 transitions. [2018-09-14 17:54:35,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:54:35,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 902 [2018-09-14 17:54:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:54:35,761 INFO L225 Difference]: With dead ends: 32806 [2018-09-14 17:54:35,761 INFO L226 Difference]: Without dead ends: 16712 [2018-09-14 17:54:35,774 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1816 GetRequests, 1800 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:54:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16712 states. [2018-09-14 17:54:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16712 to 15784. [2018-09-14 17:54:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15784 states. [2018-09-14 17:54:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15784 states to 15784 states and 16788 transitions. [2018-09-14 17:54:35,972 INFO L78 Accepts]: Start accepts. Automaton has 15784 states and 16788 transitions. Word has length 902 [2018-09-14 17:54:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:54:35,973 INFO L480 AbstractCegarLoop]: Abstraction has 15784 states and 16788 transitions. [2018-09-14 17:54:35,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:54:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 15784 states and 16788 transitions. [2018-09-14 17:54:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2018-09-14 17:54:35,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:54:35,987 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:54:35,987 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:54:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1495209481, now seen corresponding path program 1 times [2018-09-14 17:54:35,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:54:35,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:35,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:35,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:35,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:54:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 1104 proven. 214 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2018-09-14 17:54:37,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:54:37,420 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:54:37,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:37,433 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:54:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:37,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:54:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 1417 trivial. 0 not checked. [2018-09-14 17:54:38,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:54:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2018-09-14 17:54:38,592 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:54:38,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:54:38,592 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:54:38,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:54:38,593 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:54:38,593 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:54:38,594 INFO L87 Difference]: Start difference. First operand 15784 states and 16788 transitions. Second operand 3 states. [2018-09-14 17:54:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:54:40,112 INFO L93 Difference]: Finished difference Result 32475 states and 34774 transitions. [2018-09-14 17:54:40,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:54:40,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 925 [2018-09-14 17:54:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:54:40,137 INFO L225 Difference]: With dead ends: 32475 [2018-09-14 17:54:40,137 INFO L226 Difference]: Without dead ends: 17005 [2018-09-14 17:54:40,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1857 GetRequests, 1851 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:54:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2018-09-14 17:54:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 16079. [2018-09-14 17:54:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16079 states. [2018-09-14 17:54:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 17097 transitions. [2018-09-14 17:54:40,345 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 17097 transitions. Word has length 925 [2018-09-14 17:54:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:54:40,346 INFO L480 AbstractCegarLoop]: Abstraction has 16079 states and 17097 transitions. [2018-09-14 17:54:40,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:54:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 17097 transitions. [2018-09-14 17:54:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-09-14 17:54:40,366 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:54:40,366 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, 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:54:40,367 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:54:40,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2045527566, now seen corresponding path program 1 times [2018-09-14 17:54:40,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:54:40,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:40,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:40,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:54:40,368 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:54:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 759 proven. 235 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2018-09-14 17:54:41,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:54:41,860 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:54:41,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:41,880 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:54:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:42,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:54:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 923 proven. 2 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-09-14 17:54:42,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:54:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 923 proven. 2 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-09-14 17:54:44,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:54:44,188 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 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:54:44,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:54:44,205 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:54:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:54:44,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-14 17:54:46,989 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:54:47,190 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:54:47,191 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:54:47,197 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:54:47,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:54:47 BoogieIcfgContainer [2018-09-14 17:54:47,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:54:47,198 INFO L168 Benchmark]: Toolchain (without parser) took 234197.21 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 190.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:47,199 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:54:47,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1289.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:47,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 262.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:47,201 INFO L168 Benchmark]: Boogie Preprocessor took 657.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:47,202 INFO L168 Benchmark]: RCFGBuilder took 9700.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.1 MB). Peak memory consumption was 287.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:47,202 INFO L168 Benchmark]: TraceAbstraction took 222281.52 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:54:47,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1289.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 262.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 657.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9700.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.1 MB). Peak memory consumption was 287.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222281.52 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was analyzing trace of length 981 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 222.1s OverallTime, 20 OverallIterations, 8 TraceHistogramMax, 139.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3363 SDtfs, 20623 SDslu, 2998 SDs, 0 SdLazy, 40135 SolverSat, 7418 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 123.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23491 GetRequests, 23246 SyntacticMatches, 48 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 35.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16098occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 8138 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 59.5s InterpolantComputationTime, 20857 NumberOfCodeBlocks, 20857 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 32438 ConstructedInterpolants, 1146 QuantifiedInterpolants, 88817783 SizeOfPredicates, 38 NumberOfNonLiveVariables, 15847 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 55 InterpolantComputations, 16 PerfectInterpolantSequences, 40958/42639 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-54-47-229.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-54-47-229.csv Completed graceful shutdown