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/Problem16_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:56:10,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:56:10,069 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:56:10,088 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:56:10,089 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:56:10,090 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:56:10,091 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:56:10,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:56:10,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:56:10,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:56:10,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:56:10,111 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:56:10,112 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:56:10,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:56:10,118 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:56:10,119 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:56:10,121 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:56:10,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:56:10,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:56:10,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:56:10,132 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:56:10,133 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:56:10,137 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:56:10,138 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:56:10,138 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:56:10,139 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:56:10,140 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:56:10,141 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:56:10,142 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:56:10,143 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:56:10,144 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:56:10,144 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:56:10,146 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:56:10,146 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:56:10,147 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:56:10,149 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:56:10,150 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 17:56:10,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:56:10,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:56:10,179 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:56:10,179 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:56:10,179 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:56:10,179 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:56:10,183 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:56:10,183 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:56:10,183 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:56:10,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:56:10,183 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:56:10,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:56:10,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:56:10,186 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:56:10,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:56:10,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:56:10,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:56:10,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:56:10,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:56:10,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:56:10,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:56:10,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:56:10,187 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:56:10,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:56:10,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:56:10,188 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:56:10,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:56:10,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:56:10,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:56:10,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:56:10,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:56:10,270 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:56:10,271 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:56:10,272 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-09-14 17:56:10,633 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa94bd7b/59a6658e5c1041b5960ac9cdca81ed14/FLAGbdd796240 [2018-09-14 17:56:11,003 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:56:11,005 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-09-14 17:56:11,030 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa94bd7b/59a6658e5c1041b5960ac9cdca81ed14/FLAGbdd796240 [2018-09-14 17:56:11,051 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daa94bd7b/59a6658e5c1041b5960ac9cdca81ed14 [2018-09-14 17:56:11,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:56:11,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:56:11,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:56:11,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:56:11,073 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:56:11,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:56:11" (1/1) ... [2018-09-14 17:56:11,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:11, skipping insertion in model container [2018-09-14 17:56:11,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:56:11" (1/1) ... [2018-09-14 17:56:11,090 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:56:11,915 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:56:11,936 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:56:12,175 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:56:12,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12 WrapperNode [2018-09-14 17:56:12,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:56:12,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:56:12,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:56:12,284 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:56:12,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:56:12,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:56:12,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:56:12,492 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:56:12,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (1/1) ... [2018-09-14 17:56:12,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:56:12,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:56:12,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:56:12,985 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:56:12,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (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 17:56:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:56:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:56:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:56:13,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:56:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:56:13,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:56:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:56:13,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:56:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:56:13,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:56:19,057 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:56:19,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:56:19 BoogieIcfgContainer [2018-09-14 17:56:19,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:56:19,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:56:19,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:56:19,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:56:19,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:56:11" (1/3) ... [2018-09-14 17:56:19,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:56:19, skipping insertion in model container [2018-09-14 17:56:19,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:12" (2/3) ... [2018-09-14 17:56:19,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:56:19, skipping insertion in model container [2018-09-14 17:56:19,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:56:19" (3/3) ... [2018-09-14 17:56:19,068 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label42_true-unreach-call.c [2018-09-14 17:56:19,078 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:56:19,087 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:56:19,142 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:56:19,143 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:56:19,143 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:56:19,144 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:56:19,144 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:56:19,144 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:56:19,144 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:56:19,144 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:56:19,145 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:56:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-14 17:56:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-14 17:56:19,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:19,194 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:56:19,195 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1180093893, now seen corresponding path program 1 times [2018-09-14 17:56:19,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:19,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:19,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:19,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:19,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:19,740 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:56:19,901 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 17:56:19,904 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:19,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:56:19,904 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:19,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:56:19,935 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:56:19,936 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:56:19,939 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-09-14 17:56:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:23,398 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-09-14 17:56:23,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:56:23,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-14 17:56:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:23,427 INFO L225 Difference]: With dead ends: 1156 [2018-09-14 17:56:23,427 INFO L226 Difference]: Without dead ends: 744 [2018-09-14 17:56:23,437 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:56:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-09-14 17:56:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-09-14 17:56:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-14 17:56:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-09-14 17:56:23,541 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 69 [2018-09-14 17:56:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:23,542 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-09-14 17:56:23,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:56:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-09-14 17:56:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-14 17:56:23,554 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:23,554 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, 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] [2018-09-14 17:56:23,555 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:23,555 INFO L82 PathProgramCache]: Analyzing trace with hash 814141313, now seen corresponding path program 1 times [2018-09-14 17:56:23,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:23,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:23,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:23,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:23,558 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:56:23,911 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:23,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:56:23,912 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:23,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:56:23,914 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:56:23,915 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:56:23,915 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-09-14 17:56:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:32,305 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-09-14 17:56:32,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:56:32,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-09-14 17:56:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:32,321 INFO L225 Difference]: With dead ends: 2184 [2018-09-14 17:56:32,321 INFO L226 Difference]: Without dead ends: 1446 [2018-09-14 17:56:32,327 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:56:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-09-14 17:56:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-09-14 17:56:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-09-14 17:56:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-09-14 17:56:32,420 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 162 [2018-09-14 17:56:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:32,421 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-09-14 17:56:32,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:56:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-09-14 17:56:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-14 17:56:32,433 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:32,434 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, 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] [2018-09-14 17:56:32,434 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:32,434 INFO L82 PathProgramCache]: Analyzing trace with hash -712455945, now seen corresponding path program 1 times [2018-09-14 17:56:32,435 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:32,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:32,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:32,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:32,436 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:32,822 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:56:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:56:32,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:56:32,901 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 17:56:32,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:32,913 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:56:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:33,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:56:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-14 17:56:33,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:56:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:56:33,940 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:56:33,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:56:33,940 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:33,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:56:33,942 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:56:33,943 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:56:33,943 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 5 states. [2018-09-14 17:56:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:45,311 INFO L93 Difference]: Finished difference Result 3750 states and 6054 transitions. [2018-09-14 17:56:45,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:56:45,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-09-14 17:56:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:45,334 INFO L225 Difference]: With dead ends: 3750 [2018-09-14 17:56:45,334 INFO L226 Difference]: Without dead ends: 2331 [2018-09-14 17:56:45,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:56:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2018-09-14 17:56:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2308. [2018-09-14 17:56:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2018-09-14 17:56:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3578 transitions. [2018-09-14 17:56:45,410 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3578 transitions. Word has length 273 [2018-09-14 17:56:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:45,410 INFO L480 AbstractCegarLoop]: Abstraction has 2308 states and 3578 transitions. [2018-09-14 17:56:45,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:56:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3578 transitions. [2018-09-14 17:56:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-09-14 17:56:45,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:45,420 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 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 17:56:45,421 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:45,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1674960492, now seen corresponding path program 1 times [2018-09-14 17:56:45,421 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:45,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:45,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:45,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:45,423 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 186 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:56:45,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:56:45,699 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 17:56:45,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:45,708 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:56:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:45,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:56:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-09-14 17:56:45,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:56:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 186 proven. 142 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:56:46,511 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:56:46,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 17:56:46,512 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:46,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:56:46,513 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:56:46,513 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:56:46,513 INFO L87 Difference]: Start difference. First operand 2308 states and 3578 transitions. Second operand 5 states. [2018-09-14 17:56:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:55,518 INFO L93 Difference]: Finished difference Result 8877 states and 14040 transitions. [2018-09-14 17:56:55,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:56:55,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 349 [2018-09-14 17:56:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:55,563 INFO L225 Difference]: With dead ends: 8877 [2018-09-14 17:56:55,563 INFO L226 Difference]: Without dead ends: 6575 [2018-09-14 17:56:55,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 696 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:56:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2018-09-14 17:56:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6502. [2018-09-14 17:56:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2018-09-14 17:56:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9679 transitions. [2018-09-14 17:56:55,780 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9679 transitions. Word has length 349 [2018-09-14 17:56:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:55,781 INFO L480 AbstractCegarLoop]: Abstraction has 6502 states and 9679 transitions. [2018-09-14 17:56:55,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:56:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9679 transitions. [2018-09-14 17:56:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-14 17:56:55,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:55,802 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, 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, 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] [2018-09-14 17:56:55,802 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:55,802 INFO L82 PathProgramCache]: Analyzing trace with hash -648618532, now seen corresponding path program 1 times [2018-09-14 17:56:55,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:55,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:55,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:55,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:55,804 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:56,122 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:56:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 186 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:56:56,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:56:56,749 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 17:56:56,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:56,766 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:56:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:56,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:56:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-09-14 17:56:57,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:56:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 186 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 17:56:57,443 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:56:57,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:56:57,443 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:57,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:56:57,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:56:57,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:56:57,445 INFO L87 Difference]: Start difference. First operand 6502 states and 9679 transitions. Second operand 5 states. [2018-09-14 17:57:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:02,575 INFO L93 Difference]: Finished difference Result 24874 states and 38373 transitions. [2018-09-14 17:57:02,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:57:02,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 353 [2018-09-14 17:57:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:02,701 INFO L225 Difference]: With dead ends: 24874 [2018-09-14 17:57:02,702 INFO L226 Difference]: Without dead ends: 18378 [2018-09-14 17:57:02,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 701 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:57:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2018-09-14 17:57:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 18241. [2018-09-14 17:57:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18241 states. [2018-09-14 17:57:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18241 states to 18241 states and 24531 transitions. [2018-09-14 17:57:03,468 INFO L78 Accepts]: Start accepts. Automaton has 18241 states and 24531 transitions. Word has length 353 [2018-09-14 17:57:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:03,468 INFO L480 AbstractCegarLoop]: Abstraction has 18241 states and 24531 transitions. [2018-09-14 17:57:03,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:57:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 18241 states and 24531 transitions. [2018-09-14 17:57:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-14 17:57:03,497 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:03,498 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:03,498 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1780760979, now seen corresponding path program 1 times [2018-09-14 17:57:03,500 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:03,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:03,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:03,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:03,501 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:57:04,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:04,775 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 17:57:04,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:04,787 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:04,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:57:05,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:57:05,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:05,406 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:57:05,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:05,422 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:05,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-14 17:57:05,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-14 17:57:06,401 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 17:57:06,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 5, 5] total 24 [2018-09-14 17:57:06,402 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:06,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:57:06,403 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:57:06,403 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:57:06,403 INFO L87 Difference]: Start difference. First operand 18241 states and 24531 transitions. Second operand 5 states. [2018-09-14 17:57:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:10,818 INFO L93 Difference]: Finished difference Result 40544 states and 56416 transitions. [2018-09-14 17:57:10,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:57:10,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-09-14 17:57:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:10,933 INFO L225 Difference]: With dead ends: 40544 [2018-09-14 17:57:10,934 INFO L226 Difference]: Without dead ends: 22309 [2018-09-14 17:57:10,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1496 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:57:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22309 states. [2018-09-14 17:57:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22309 to 21049. [2018-09-14 17:57:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21049 states. [2018-09-14 17:57:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21049 states to 21049 states and 26904 transitions. [2018-09-14 17:57:11,473 INFO L78 Accepts]: Start accepts. Automaton has 21049 states and 26904 transitions. Word has length 377 [2018-09-14 17:57:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:11,474 INFO L480 AbstractCegarLoop]: Abstraction has 21049 states and 26904 transitions. [2018-09-14 17:57:11,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:57:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21049 states and 26904 transitions. [2018-09-14 17:57:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-09-14 17:57:11,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:11,516 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, 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, 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] [2018-09-14 17:57:11,516 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:11,517 INFO L82 PathProgramCache]: Analyzing trace with hash -85511950, now seen corresponding path program 1 times [2018-09-14 17:57:11,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:11,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:11,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:11,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:11,518 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:11,923 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:57:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 186 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-14 17:57:12,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:12,699 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 17:57:12,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:12,708 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:12,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-09-14 17:57:13,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 186 proven. 242 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-14 17:57:14,125 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:57:14,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:57:14,125 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:57:14,126 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:57:14,126 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:57:14,127 INFO L87 Difference]: Start difference. First operand 21049 states and 26904 transitions. Second operand 5 states. [2018-09-14 17:57:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:17,100 INFO L93 Difference]: Finished difference Result 43541 states and 56517 transitions. [2018-09-14 17:57:17,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:57:17,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 537 [2018-09-14 17:57:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:17,193 INFO L225 Difference]: With dead ends: 43541 [2018-09-14 17:57:17,194 INFO L226 Difference]: Without dead ends: 22498 [2018-09-14 17:57:17,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1068 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:57:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22498 states. [2018-09-14 17:57:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22498 to 22339. [2018-09-14 17:57:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22339 states. [2018-09-14 17:57:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22339 states to 22339 states and 26826 transitions. [2018-09-14 17:57:17,881 INFO L78 Accepts]: Start accepts. Automaton has 22339 states and 26826 transitions. Word has length 537 [2018-09-14 17:57:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:17,882 INFO L480 AbstractCegarLoop]: Abstraction has 22339 states and 26826 transitions. [2018-09-14 17:57:17,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:57:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 22339 states and 26826 transitions. [2018-09-14 17:57:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-09-14 17:57:17,935 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:17,935 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:17,936 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash -321932554, now seen corresponding path program 1 times [2018-09-14 17:57:17,936 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:17,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:17,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:17,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:17,938 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-14 17:57:18,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:18,846 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:57:18,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:18,857 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:19,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-14 17:57:19,258 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-14 17:57:19,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:19,929 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:57:19,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:19,945 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:20,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-14 17:57:20,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 305 proven. 115 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-14 17:57:20,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:57:20,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:57:20,817 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:57:20,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:57:20,818 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:57:20,818 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:57:20,819 INFO L87 Difference]: Start difference. First operand 22339 states and 26826 transitions. Second operand 9 states. [2018-09-14 17:57:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:29,148 INFO L93 Difference]: Finished difference Result 63463 states and 85728 transitions. [2018-09-14 17:57:29,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:57:29,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 651 [2018-09-14 17:57:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:29,436 INFO L225 Difference]: With dead ends: 63463 [2018-09-14 17:57:29,436 INFO L226 Difference]: Without dead ends: 41130 [2018-09-14 17:57:29,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2624 GetRequests, 2600 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:57:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41130 states. [2018-09-14 17:57:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41130 to 40981. [2018-09-14 17:57:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40981 states. [2018-09-14 17:57:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40981 states to 40981 states and 51834 transitions. [2018-09-14 17:57:30,818 INFO L78 Accepts]: Start accepts. Automaton has 40981 states and 51834 transitions. Word has length 651 [2018-09-14 17:57:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:30,819 INFO L480 AbstractCegarLoop]: Abstraction has 40981 states and 51834 transitions. [2018-09-14 17:57:30,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:57:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 40981 states and 51834 transitions. [2018-09-14 17:57:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2018-09-14 17:57:30,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:30,853 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, 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, 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] [2018-09-14 17:57:30,853 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1502110058, now seen corresponding path program 1 times [2018-09-14 17:57:30,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:30,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:30,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:30,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:30,855 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-09-14 17:57:31,712 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:57:31,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:57:31,712 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:31,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:57:31,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:57:31,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:57:31,716 INFO L87 Difference]: Start difference. First operand 40981 states and 51834 transitions. Second operand 4 states. [2018-09-14 17:57:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:36,486 INFO L93 Difference]: Finished difference Result 78239 states and 100326 transitions. [2018-09-14 17:57:36,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:57:36,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 731 [2018-09-14 17:57:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:36,650 INFO L225 Difference]: With dead ends: 78239 [2018-09-14 17:57:36,650 INFO L226 Difference]: Without dead ends: 37264 [2018-09-14 17:57:36,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:57:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37264 states. [2018-09-14 17:57:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37264 to 37231. [2018-09-14 17:57:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37231 states. [2018-09-14 17:57:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37231 states to 37231 states and 44523 transitions. [2018-09-14 17:57:37,588 INFO L78 Accepts]: Start accepts. Automaton has 37231 states and 44523 transitions. Word has length 731 [2018-09-14 17:57:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:37,589 INFO L480 AbstractCegarLoop]: Abstraction has 37231 states and 44523 transitions. [2018-09-14 17:57:37,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:57:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37231 states and 44523 transitions. [2018-09-14 17:57:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2018-09-14 17:57:37,699 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:37,699 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:37,699 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1321317671, now seen corresponding path program 1 times [2018-09-14 17:57:37,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:37,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:37,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:37,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:37,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 671 proven. 215 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-09-14 17:57:40,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:40,525 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 17:57:40,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:40,533 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:40,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:41,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:41,999 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:57:42,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-09-14 17:57:42,000 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:42,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:57:42,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:57:42,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:57:42,001 INFO L87 Difference]: Start difference. First operand 37231 states and 44523 transitions. Second operand 3 states. [2018-09-14 17:57:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:44,903 INFO L93 Difference]: Finished difference Result 74451 states and 88966 transitions. [2018-09-14 17:57:44,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:57:44,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1068 [2018-09-14 17:57:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:45,031 INFO L225 Difference]: With dead ends: 74451 [2018-09-14 17:57:45,032 INFO L226 Difference]: Without dead ends: 37226 [2018-09-14 17:57:45,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2147 GetRequests, 2134 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:57:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37226 states. [2018-09-14 17:57:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37226 to 37226. [2018-09-14 17:57:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37226 states. [2018-09-14 17:57:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37226 states to 37226 states and 42746 transitions. [2018-09-14 17:57:45,872 INFO L78 Accepts]: Start accepts. Automaton has 37226 states and 42746 transitions. Word has length 1068 [2018-09-14 17:57:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:45,874 INFO L480 AbstractCegarLoop]: Abstraction has 37226 states and 42746 transitions. [2018-09-14 17:57:45,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:57:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 37226 states and 42746 transitions. [2018-09-14 17:57:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2018-09-14 17:57:45,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:45,950 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:45,951 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash -496803498, now seen corresponding path program 1 times [2018-09-14 17:57:45,951 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:45,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:45,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:45,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:45,953 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 743 proven. 305 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2018-09-14 17:57:48,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:48,738 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 17:57:48,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:48,750 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:49,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:49,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:50,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:50,610 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 17:57:50,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:50,625 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:51,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:52,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 689 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:52,899 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:57:52,900 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-09-14 17:57:52,900 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:57:52,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 17:57:52,902 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 17:57:52,902 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:57:52,902 INFO L87 Difference]: Start difference. First operand 37226 states and 42746 transitions. Second operand 15 states. [2018-09-14 17:58:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:06,266 INFO L93 Difference]: Finished difference Result 77583 states and 89029 transitions. [2018-09-14 17:58:06,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-14 17:58:06,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1077 [2018-09-14 17:58:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:06,379 INFO L225 Difference]: With dead ends: 77583 [2018-09-14 17:58:06,380 INFO L226 Difference]: Without dead ends: 40363 [2018-09-14 17:58:06,489 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4388 GetRequests, 4329 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=798, Invalid=2624, Unknown=0, NotChecked=0, Total=3422 [2018-09-14 17:58:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40363 states. [2018-09-14 17:58:07,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40363 to 39600. [2018-09-14 17:58:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39600 states. [2018-09-14 17:58:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39600 states to 39600 states and 44424 transitions. [2018-09-14 17:58:07,105 INFO L78 Accepts]: Start accepts. Automaton has 39600 states and 44424 transitions. Word has length 1077 [2018-09-14 17:58:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:07,106 INFO L480 AbstractCegarLoop]: Abstraction has 39600 states and 44424 transitions. [2018-09-14 17:58:07,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 17:58:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 39600 states and 44424 transitions. [2018-09-14 17:58:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2018-09-14 17:58:07,169 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:07,170 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:58:07,170 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2020595644, now seen corresponding path program 1 times [2018-09-14 17:58:07,171 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:07,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:07,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:07,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:07,172 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-14 17:58:09,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:09,263 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 17:58:09,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:09,271 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:09,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 2292 proven. 2 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2018-09-14 17:58:10,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-14 17:58:11,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:11,564 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:58:11,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:11,580 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:12,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 2292 proven. 2 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2018-09-14 17:58:13,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4026 backedges. 763 proven. 658 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2018-09-14 17:58:14,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:58:14,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:58:14,118 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:58:14,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:58:14,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:58:14,120 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:58:14,120 INFO L87 Difference]: Start difference. First operand 39600 states and 44424 transitions. Second operand 9 states. [2018-09-14 17:58:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:20,801 INFO L93 Difference]: Finished difference Result 80062 states and 93778 transitions. [2018-09-14 17:58:20,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:58:20,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1406 [2018-09-14 17:58:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:20,909 INFO L225 Difference]: With dead ends: 80062 [2018-09-14 17:58:20,909 INFO L226 Difference]: Without dead ends: 40854 [2018-09-14 17:58:20,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5646 GetRequests, 5621 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:58:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40854 states. [2018-09-14 17:58:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40854 to 39929. [2018-09-14 17:58:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39929 states. [2018-09-14 17:58:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39929 states to 39929 states and 43836 transitions. [2018-09-14 17:58:21,565 INFO L78 Accepts]: Start accepts. Automaton has 39929 states and 43836 transitions. Word has length 1406 [2018-09-14 17:58:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:21,566 INFO L480 AbstractCegarLoop]: Abstraction has 39929 states and 43836 transitions. [2018-09-14 17:58:21,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:58:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39929 states and 43836 transitions. [2018-09-14 17:58:21,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1432 [2018-09-14 17:58:21,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:21,626 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:58:21,626 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:21,627 INFO L82 PathProgramCache]: Analyzing trace with hash 660251161, now seen corresponding path program 1 times [2018-09-14 17:58:21,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:21,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:21,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:21,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:21,628 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 1404 proven. 970 refuted. 0 times theorem prover too weak. 1824 trivial. 0 not checked. [2018-09-14 17:58:26,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:26,480 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:58:26,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:26,493 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:26,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 1164 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2018-09-14 17:58:27,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4198 backedges. 496 proven. 1074 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2018-09-14 17:58:30,023 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:58:30,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 5] total 21 [2018-09-14 17:58:30,023 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:58:30,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:58:30,024 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:58:30,025 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:58:30,025 INFO L87 Difference]: Start difference. First operand 39929 states and 43836 transitions. Second operand 5 states. [2018-09-14 17:58:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:35,258 INFO L93 Difference]: Finished difference Result 86925 states and 95630 transitions. [2018-09-14 17:58:35,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:58:35,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1431 [2018-09-14 17:58:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:35,336 INFO L225 Difference]: With dead ends: 86925 [2018-09-14 17:58:35,336 INFO L226 Difference]: Without dead ends: 47007 [2018-09-14 17:58:35,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2880 GetRequests, 2858 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:58:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47007 states. [2018-09-14 17:58:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47007 to 44133. [2018-09-14 17:58:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44133 states. [2018-09-14 17:58:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44133 states to 44133 states and 48120 transitions. [2018-09-14 17:58:35,967 INFO L78 Accepts]: Start accepts. Automaton has 44133 states and 48120 transitions. Word has length 1431 [2018-09-14 17:58:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:35,967 INFO L480 AbstractCegarLoop]: Abstraction has 44133 states and 48120 transitions. [2018-09-14 17:58:35,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:58:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 44133 states and 48120 transitions. [2018-09-14 17:58:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2018-09-14 17:58:36,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:36,057 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:58:36,058 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:36,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1615944214, now seen corresponding path program 1 times [2018-09-14 17:58:36,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:36,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:36,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:36,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:36,060 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 683 proven. 1090 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2018-09-14 17:58:39,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:39,804 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 17:58:39,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:39,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:40,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 3845 proven. 6 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2018-09-14 17:58:41,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 1661 proven. 977 refuted. 0 times theorem prover too weak. 2358 trivial. 0 not checked. [2018-09-14 17:58:45,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:45,353 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 17:58:45,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:45,387 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:46,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:59:04,516 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-09-14 17:59:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 4414 trivial. 0 not checked. [2018-09-14 17:59:05,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:59:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4996 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 4414 trivial. 0 not checked. [2018-09-14 17:59:06,948 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 17:59:06,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13, 8, 8] total 26 [2018-09-14 17:59:06,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:59:06,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:59:06,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:59:06,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=547, Unknown=8, NotChecked=0, Total=650 [2018-09-14 17:59:06,952 INFO L87 Difference]: Start difference. First operand 44133 states and 48120 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 18:00:12,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:00:12,049 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:00:12,055 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:00:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:00:12 BoogieIcfgContainer [2018-09-14 18:00:12,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:00:12,056 INFO L168 Benchmark]: Toolchain (without parser) took 240994.17 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 937.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,059 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:00:12,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1217.47 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,061 INFO L168 Benchmark]: Boogie Preprocessor took 492.27 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 828.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.0 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,062 INFO L168 Benchmark]: RCFGBuilder took 6074.42 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: 254.7 MB). Peak memory consumption was 254.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,063 INFO L168 Benchmark]: TraceAbstraction took 232995.66 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 703.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:12,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1217.47 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 492.27 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 828.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.0 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6074.42 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: 254.7 MB). Peak memory consumption was 254.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232995.66 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 703.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (44133states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1676 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 232.9s OverallTime, 14 OverallIterations, 10 TraceHistogramMax, 153.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2333 SDtfs, 21069 SDslu, 1985 SDs, 0 SdLazy, 40954 SolverSat, 9910 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 133.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28386 GetRequests, 28128 SyntacticMatches, 32 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 29.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44133occurred in iteration=13, 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: 6.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 6417 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 52.8s InterpolantComputationTime, 24086 NumberOfCodeBlocks, 24086 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 38119 ConstructedInterpolants, 65 QuantifiedInterpolants, 120479290 SizeOfPredicates, 18 NumberOfNonLiveVariables, 18850 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 46 InterpolantComputations, 14 PerfectInterpolantSequences, 73825/82047 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/Problem16_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-00-12-100.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-00-12-100.csv Completed graceful shutdown