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/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:08:22,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:08:22,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:08:22,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:08:22,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:08:22,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:08:22,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:08:22,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:08:22,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:08:22,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:08:22,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:08:22,213 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:08:22,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:08:22,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:08:22,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:08:22,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:08:22,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:08:22,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:08:22,235 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:08:22,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:08:22,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:08:22,242 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:08:22,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:08:22,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:08:22,249 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:08:22,250 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:08:22,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:08:22,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:08:22,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:08:22,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:08:22,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:08:22,259 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:08:22,259 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:08:22,259 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:08:22,263 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:08:22,265 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:08:22,266 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:08:22,290 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:08:22,290 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:08:22,294 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:08:22,295 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:08:22,295 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:08:22,295 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:08:22,295 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:08:22,295 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:08:22,296 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:08:22,296 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:08:22,296 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:08:22,297 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:08:22,297 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:08:22,298 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:08:22,298 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:08:22,298 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:08:22,298 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:08:22,298 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:08:22,299 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:08:22,299 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:08:22,299 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:08:22,299 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:08:22,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:08:22,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:08:22,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:08:22,302 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:08:22,302 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:08:22,302 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:08:22,303 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:08:22,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:08:22,303 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:08:22,304 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:08:22,304 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:08:22,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:08:22,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:08:22,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:08:22,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:08:22,392 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:08:22,393 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-09-14 18:08:22,757 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d996f9039/687decc470cb4af18a492e5bd229d50b/FLAG260b8224d [2018-09-14 18:08:23,153 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:08:23,154 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-09-14 18:08:23,180 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d996f9039/687decc470cb4af18a492e5bd229d50b/FLAG260b8224d [2018-09-14 18:08:23,201 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d996f9039/687decc470cb4af18a492e5bd229d50b [2018-09-14 18:08:23,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:08:23,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:08:23,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:08:23,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:08:23,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:08:23,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:08:23" (1/1) ... [2018-09-14 18:08:23,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2a0e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:23, skipping insertion in model container [2018-09-14 18:08:23,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:08:23" (1/1) ... [2018-09-14 18:08:23,241 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:08:24,300 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:08:24,321 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:08:24,691 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:08:24,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24 WrapperNode [2018-09-14 18:08:24,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:08:24,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:08:24,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:08:24,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:08:24,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:24,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:08:25,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:08:25,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:08:25,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:08:25,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:25,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... [2018-09-14 18:08:26,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:08:26,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:08:26,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:08:26,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:08:26,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:08:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:08:26,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:08:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:08:26,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:08:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:08:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:08:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:08:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:08:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:08:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:08:39,310 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:08:39,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:08:39 BoogieIcfgContainer [2018-09-14 18:08:39,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:08:39,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:08:39,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:08:39,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:08:39,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:08:23" (1/3) ... [2018-09-14 18:08:39,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c62de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:08:39, skipping insertion in model container [2018-09-14 18:08:39,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:08:24" (2/3) ... [2018-09-14 18:08:39,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c62de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:08:39, skipping insertion in model container [2018-09-14 18:08:39,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:08:39" (3/3) ... [2018-09-14 18:08:39,321 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-09-14 18:08:39,330 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:08:39,340 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:08:39,402 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:08:39,403 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:08:39,403 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:08:39,403 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:08:39,403 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:08:39,403 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:08:39,404 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:08:39,404 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:08:39,404 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:08:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:08:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-14 18:08:39,454 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:39,455 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:39,457 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:39,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-09-14 18:08:39,466 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:39,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:39,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:39,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:39,521 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:40,035 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:40,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:08:40,036 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:40,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:08:40,058 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:08:40,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:08:40,062 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:08:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:49,750 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-14 18:08:49,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:08:49,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-14 18:08:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:49,800 INFO L225 Difference]: With dead ends: 2164 [2018-09-14 18:08:49,800 INFO L226 Difference]: Without dead ends: 1554 [2018-09-14 18:08:49,810 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:08:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-14 18:08:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-14 18:08:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-14 18:08:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-14 18:08:49,988 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 39 [2018-09-14 18:08:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:49,989 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-14 18:08:49,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:08:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-14 18:08:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-14 18:08:50,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:50,001 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:50,001 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:50,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-09-14 18:08:50,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:50,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:50,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:50,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:50,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:50,358 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:50,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:08:50,358 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:50,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:08:50,360 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:08:50,360 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:08:50,361 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-14 18:08:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:57,740 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-14 18:08:57,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:08:57,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-09-14 18:08:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:57,756 INFO L225 Difference]: With dead ends: 3031 [2018-09-14 18:08:57,757 INFO L226 Difference]: Without dead ends: 1985 [2018-09-14 18:08:57,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:08:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-14 18:08:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-14 18:08:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-14 18:08:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-14 18:08:57,826 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 111 [2018-09-14 18:08:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:57,827 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-14 18:08:57,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:08:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-14 18:08:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-14 18:08:57,838 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:57,838 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:57,838 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-09-14 18:08:57,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:57,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:57,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:57,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:57,841 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:08:58,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:58,114 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:08:58,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:58,130 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:58,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:04,879 WARN L178 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-14 18:09:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:04,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:06,005 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-09-14 18:09:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:06,364 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:09:06,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 18:09:06,364 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:06,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:09:06,366 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:09:06,366 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:09:06,367 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-14 18:09:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:41,461 INFO L93 Difference]: Finished difference Result 7518 states and 12901 transitions. [2018-09-14 18:09:41,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:09:41,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-09-14 18:09:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:41,497 INFO L225 Difference]: With dead ends: 7518 [2018-09-14 18:09:41,497 INFO L226 Difference]: Without dead ends: 5565 [2018-09-14 18:09:41,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:09:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2018-09-14 18:09:41,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5557. [2018-09-14 18:09:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5557 states. [2018-09-14 18:09:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 9353 transitions. [2018-09-14 18:09:41,716 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 9353 transitions. Word has length 114 [2018-09-14 18:09:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:41,717 INFO L480 AbstractCegarLoop]: Abstraction has 5557 states and 9353 transitions. [2018-09-14 18:09:41,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:09:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 9353 transitions. [2018-09-14 18:09:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-14 18:09:41,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:41,722 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:41,722 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-09-14 18:09:41,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:41,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:41,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:41,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:41,724 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:42,047 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:09:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:42,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:42,682 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:09:42,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:42,695 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:42,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:42,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:43,062 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:09:43,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:09:43,062 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:43,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:09:43,063 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:09:43,063 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:09:43,064 INFO L87 Difference]: Start difference. First operand 5557 states and 9353 transitions. Second operand 3 states. [2018-09-14 18:09:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:47,631 INFO L93 Difference]: Finished difference Result 13732 states and 23010 transitions. [2018-09-14 18:09:47,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:09:47,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-09-14 18:09:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:47,678 INFO L225 Difference]: With dead ends: 13732 [2018-09-14 18:09:47,678 INFO L226 Difference]: Without dead ends: 8181 [2018-09-14 18:09:47,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:09:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8181 states. [2018-09-14 18:09:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8181 to 8180. [2018-09-14 18:09:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8180 states. [2018-09-14 18:09:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8180 states to 8180 states and 12796 transitions. [2018-09-14 18:09:47,923 INFO L78 Accepts]: Start accepts. Automaton has 8180 states and 12796 transitions. Word has length 127 [2018-09-14 18:09:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:47,923 INFO L480 AbstractCegarLoop]: Abstraction has 8180 states and 12796 transitions. [2018-09-14 18:09:47,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:09:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8180 states and 12796 transitions. [2018-09-14 18:09:47,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-14 18:09:47,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:47,931 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:47,931 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-09-14 18:09:47,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:47,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:47,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:47,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:47,933 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:48,229 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:09:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:09:48,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:48,403 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 18:09:48,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:48,410 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:48,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:48,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:48,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:09:48,925 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:09:48,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:48,946 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:09:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:49,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:09:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:09:49,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:09:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:09:49,491 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:09:49,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:09:49,492 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:49,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:09:49,493 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:09:49,493 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:09:49,493 INFO L87 Difference]: Start difference. First operand 8180 states and 12796 transitions. Second operand 5 states. [2018-09-14 18:09:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:09:54,732 INFO L93 Difference]: Finished difference Result 16415 states and 25744 transitions. [2018-09-14 18:09:54,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:09:54,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-09-14 18:09:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:09:54,768 INFO L225 Difference]: With dead ends: 16415 [2018-09-14 18:09:54,768 INFO L226 Difference]: Without dead ends: 8241 [2018-09-14 18:09:54,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 838 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:09:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8241 states. [2018-09-14 18:09:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8241 to 8239. [2018-09-14 18:09:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8239 states. [2018-09-14 18:09:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 10749 transitions. [2018-09-14 18:09:54,990 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 10749 transitions. Word has length 212 [2018-09-14 18:09:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:09:54,991 INFO L480 AbstractCegarLoop]: Abstraction has 8239 states and 10749 transitions. [2018-09-14 18:09:54,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:09:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 10749 transitions. [2018-09-14 18:09:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-09-14 18:09:55,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:09:55,003 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:09:55,003 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:09:55,004 INFO L82 PathProgramCache]: Analyzing trace with hash -519661375, now seen corresponding path program 1 times [2018-09-14 18:09:55,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:09:55,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:55,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:09:55,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:09:55,006 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:09:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:09:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:09:55,902 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:09:55,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:09:55,903 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:09:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:09:55,904 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:09:55,908 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:09:55,909 INFO L87 Difference]: Start difference. First operand 8239 states and 10749 transitions. Second operand 6 states. [2018-09-14 18:10:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:23,526 INFO L93 Difference]: Finished difference Result 24332 states and 33624 transitions. [2018-09-14 18:10:23,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 18:10:23,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-09-14 18:10:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:23,594 INFO L225 Difference]: With dead ends: 24332 [2018-09-14 18:10:23,595 INFO L226 Difference]: Without dead ends: 15210 [2018-09-14 18:10:23,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 18:10:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15210 states. [2018-09-14 18:10:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15210 to 14099. [2018-09-14 18:10:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14099 states. [2018-09-14 18:10:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 17363 transitions. [2018-09-14 18:10:24,003 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 17363 transitions. Word has length 265 [2018-09-14 18:10:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:24,004 INFO L480 AbstractCegarLoop]: Abstraction has 14099 states and 17363 transitions. [2018-09-14 18:10:24,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:10:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 17363 transitions. [2018-09-14 18:10:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-14 18:10:24,016 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:24,016 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:24,017 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-09-14 18:10:24,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:24,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:24,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:24,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:24,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:10:24,373 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:10:24,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:10:24,374 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:10:24,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:10:24,375 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:10:24,375 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:10:24,375 INFO L87 Difference]: Start difference. First operand 14099 states and 17363 transitions. Second operand 4 states. [2018-09-14 18:10:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:32,579 INFO L93 Difference]: Finished difference Result 41500 states and 53946 transitions. [2018-09-14 18:10:32,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:10:32,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-09-14 18:10:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:32,679 INFO L225 Difference]: With dead ends: 41500 [2018-09-14 18:10:32,680 INFO L226 Difference]: Without dead ends: 27841 [2018-09-14 18:10:32,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:10:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27841 states. [2018-09-14 18:10:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27841 to 25382. [2018-09-14 18:10:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25382 states. [2018-09-14 18:10:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25382 states to 25382 states and 31694 transitions. [2018-09-14 18:10:33,282 INFO L78 Accepts]: Start accepts. Automaton has 25382 states and 31694 transitions. Word has length 293 [2018-09-14 18:10:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:33,284 INFO L480 AbstractCegarLoop]: Abstraction has 25382 states and 31694 transitions. [2018-09-14 18:10:33,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:10:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25382 states and 31694 transitions. [2018-09-14 18:10:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-14 18:10:33,311 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:33,312 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:33,312 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-09-14 18:10:33,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:33,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:33,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:33,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:33,314 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:10:34,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:34,251 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:10:34,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:34,259 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:34,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:10:34,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:10:35,370 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:10:35,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-14 18:10:35,370 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:10:35,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:10:35,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:10:35,371 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:10:35,372 INFO L87 Difference]: Start difference. First operand 25382 states and 31694 transitions. Second operand 6 states. [2018-09-14 18:10:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:43,547 INFO L93 Difference]: Finished difference Result 55585 states and 69768 transitions. [2018-09-14 18:10:43,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:10:43,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-09-14 18:10:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:43,640 INFO L225 Difference]: With dead ends: 55585 [2018-09-14 18:10:43,641 INFO L226 Difference]: Without dead ends: 30643 [2018-09-14 18:10:43,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:10:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30643 states. [2018-09-14 18:10:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30643 to 28897. [2018-09-14 18:10:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28897 states. [2018-09-14 18:10:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28897 states to 28897 states and 36035 transitions. [2018-09-14 18:10:44,264 INFO L78 Accepts]: Start accepts. Automaton has 28897 states and 36035 transitions. Word has length 387 [2018-09-14 18:10:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:44,265 INFO L480 AbstractCegarLoop]: Abstraction has 28897 states and 36035 transitions. [2018-09-14 18:10:44,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:10:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 28897 states and 36035 transitions. [2018-09-14 18:10:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-09-14 18:10:44,334 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:44,334 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:44,335 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-09-14 18:10:44,335 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:44,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:44,336 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-14 18:10:44,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:44,932 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:10:44,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:44,948 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:45,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-09-14 18:10:45,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-14 18:10:46,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:10:46,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-14 18:10:46,219 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:10:46,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:10:46,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:10:46,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:10:46,221 INFO L87 Difference]: Start difference. First operand 28897 states and 36035 transitions. Second operand 3 states. [2018-09-14 18:10:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:10:52,806 INFO L93 Difference]: Finished difference Result 74946 states and 95454 transitions. [2018-09-14 18:10:52,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:10:52,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-09-14 18:10:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:10:52,968 INFO L225 Difference]: With dead ends: 74946 [2018-09-14 18:10:52,969 INFO L226 Difference]: Without dead ends: 46489 [2018-09-14 18:10:53,055 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:10:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46489 states. [2018-09-14 18:10:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46489 to 45161. [2018-09-14 18:10:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45161 states. [2018-09-14 18:10:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45161 states to 45161 states and 56621 transitions. [2018-09-14 18:10:53,983 INFO L78 Accepts]: Start accepts. Automaton has 45161 states and 56621 transitions. Word has length 575 [2018-09-14 18:10:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:10:53,984 INFO L480 AbstractCegarLoop]: Abstraction has 45161 states and 56621 transitions. [2018-09-14 18:10:53,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:10:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 45161 states and 56621 transitions. [2018-09-14 18:10:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-09-14 18:10:54,147 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:10:54,148 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:10:54,148 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:10:54,148 INFO L82 PathProgramCache]: Analyzing trace with hash 905567621, now seen corresponding path program 1 times [2018-09-14 18:10:54,148 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:10:54,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:54,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:54,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:10:54,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:10:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-09-14 18:10:55,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:55,322 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 18:10:55,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:55,330 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:55,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 18:10:55,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:56,296 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:10:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-09-14 18:10:57,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:10:57,034 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 18:10:57,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:10:57,055 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:10:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:10:57,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:10:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 18:10:57,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:10:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-09-14 18:10:58,193 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:10:58,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 18:10:58,194 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:10:58,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:10:58,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:10:58,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:10:58,197 INFO L87 Difference]: Start difference. First operand 45161 states and 56621 transitions. Second operand 7 states. [2018-09-14 18:11:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:11:13,963 INFO L93 Difference]: Finished difference Result 119175 states and 153803 transitions. [2018-09-14 18:11:13,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:11:13,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-09-14 18:11:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:11:14,285 INFO L225 Difference]: With dead ends: 119175 [2018-09-14 18:11:14,286 INFO L226 Difference]: Without dead ends: 74454 [2018-09-14 18:11:14,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2626 GetRequests, 2610 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:11:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74454 states. [2018-09-14 18:11:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74454 to 73341. [2018-09-14 18:11:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73341 states. [2018-09-14 18:11:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73341 states to 73341 states and 90692 transitions. [2018-09-14 18:11:15,840 INFO L78 Accepts]: Start accepts. Automaton has 73341 states and 90692 transitions. Word has length 653 [2018-09-14 18:11:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:11:15,841 INFO L480 AbstractCegarLoop]: Abstraction has 73341 states and 90692 transitions. [2018-09-14 18:11:15,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:11:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 73341 states and 90692 transitions. [2018-09-14 18:11:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-09-14 18:11:16,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:11:16,011 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:11:16,011 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:11:16,011 INFO L82 PathProgramCache]: Analyzing trace with hash -176426799, now seen corresponding path program 1 times [2018-09-14 18:11:16,012 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:11:16,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:16,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:16,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:16,016 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:11:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-09-14 18:11:16,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:16,972 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 18:11:16,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:16,980 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:17,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-14 18:11:17,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 150 proven. 8 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-09-14 18:11:17,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:11:17,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-09-14 18:11:17,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:11:17,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:11:17,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:11:17,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:11:17,888 INFO L87 Difference]: Start difference. First operand 73341 states and 90692 transitions. Second operand 3 states. [2018-09-14 18:11:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:11:21,923 INFO L93 Difference]: Finished difference Result 141316 states and 174205 transitions. [2018-09-14 18:11:21,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:11:21,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 720 [2018-09-14 18:11:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:11:22,165 INFO L225 Difference]: With dead ends: 141316 [2018-09-14 18:11:22,166 INFO L226 Difference]: Without dead ends: 68415 [2018-09-14 18:11:22,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1435 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:11:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68415 states. [2018-09-14 18:11:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68415 to 68393. [2018-09-14 18:11:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68393 states. [2018-09-14 18:11:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68393 states to 68393 states and 83719 transitions. [2018-09-14 18:11:23,704 INFO L78 Accepts]: Start accepts. Automaton has 68393 states and 83719 transitions. Word has length 720 [2018-09-14 18:11:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:11:23,705 INFO L480 AbstractCegarLoop]: Abstraction has 68393 states and 83719 transitions. [2018-09-14 18:11:23,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:11:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 68393 states and 83719 transitions. [2018-09-14 18:11:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-09-14 18:11:23,849 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:11:23,849 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:11:23,850 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:11:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2080661305, now seen corresponding path program 1 times [2018-09-14 18:11:23,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:11:23,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:23,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:23,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:11:23,852 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:11:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 326 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-09-14 18:11:25,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:25,029 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:11:25,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:25,045 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:25,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:27,551 WARN L178 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-14 18:11:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-09-14 18:11:28,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:30,672 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-09-14 18:11:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-14 18:11:31,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:11:31,755 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:11:31,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:11:31,771 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:11:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:11:32,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:11:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-09-14 18:11:32,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:11:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-14 18:11:37,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:11:37,934 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-14 18:11:37,935 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:11:37,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:11:37,937 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:11:37,937 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=146, Unknown=2, NotChecked=0, Total=210 [2018-09-14 18:11:37,937 INFO L87 Difference]: Start difference. First operand 68393 states and 83719 transitions. Second operand 9 states. [2018-09-14 18:12:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:00,177 INFO L93 Difference]: Finished difference Result 159548 states and 197855 transitions. [2018-09-14 18:12:00,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-14 18:12:00,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 728 [2018-09-14 18:12:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:00,479 INFO L225 Difference]: With dead ends: 159548 [2018-09-14 18:12:00,479 INFO L226 Difference]: Without dead ends: 97210 [2018-09-14 18:12:00,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2940 GetRequests, 2910 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=196, Invalid=452, Unknown=2, NotChecked=0, Total=650 [2018-09-14 18:12:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97210 states. [2018-09-14 18:12:02,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97210 to 94566. [2018-09-14 18:12:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94566 states. [2018-09-14 18:12:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94566 states to 94566 states and 112552 transitions. [2018-09-14 18:12:02,439 INFO L78 Accepts]: Start accepts. Automaton has 94566 states and 112552 transitions. Word has length 728 [2018-09-14 18:12:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:02,440 INFO L480 AbstractCegarLoop]: Abstraction has 94566 states and 112552 transitions. [2018-09-14 18:12:02,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:12:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 94566 states and 112552 transitions. [2018-09-14 18:12:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-09-14 18:12:02,604 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:02,604 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:12:02,605 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1067156795, now seen corresponding path program 1 times [2018-09-14 18:12:02,605 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:02,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:02,606 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 639 proven. 2 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-09-14 18:12:04,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:12:04,049 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:12:04,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:04,057 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:12:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:04,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:12:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-14 18:12:05,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:12:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 248 proven. 297 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-09-14 18:12:06,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:12:06,109 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 18:12:06,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:06,125 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:12:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:07,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:12:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 591 proven. 2 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-09-14 18:12:07,663 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:12:07,820 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:12:07,977 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-09-14 18:12:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 178 proven. 499 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2018-09-14 18:12:08,603 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:12:08,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 18:12:08,604 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:12:08,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:12:08,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:12:08,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:12:08,606 INFO L87 Difference]: Start difference. First operand 94566 states and 112552 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 18:12:21,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-14 18:12:21,046 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:12:21,051 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:12:21,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:12:21 BoogieIcfgContainer [2018-09-14 18:12:21,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:12:21,053 INFO L168 Benchmark]: Toolchain (without parser) took 237838.95 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,054 INFO L168 Benchmark]: CDTParser took 0.21 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 18:12:21,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1672.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 253.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,056 INFO L168 Benchmark]: Boogie Preprocessor took 888.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 943.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,056 INFO L168 Benchmark]: RCFGBuilder took 13278.85 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 450.7 MB). Peak memory consumption was 450.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,057 INFO L168 Benchmark]: TraceAbstraction took 221739.67 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -971.2 MB). Peak memory consumption was 567.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:12:21,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1672.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 253.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 888.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 943.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13278.85 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 450.7 MB). Peak memory consumption was 450.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221739.67 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -971.2 MB). Peak memory consumption was 567.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was constructing difference of abstraction (94566states) and FLOYD_HOARE automaton (currently 27 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (31429 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.6s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3907 SDtfs, 25100 SDslu, 3111 SDs, 0 SdLazy, 43036 SolverSat, 11796 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 148.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13677 GetRequests, 13513 SyntacticMatches, 32 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94566occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 10962 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 36.0s InterpolantComputationTime, 11808 NumberOfCodeBlocks, 11808 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 18528 ConstructedInterpolants, 266 QuantifiedInterpolants, 29816395 SizeOfPredicates, 24 NumberOfNonLiveVariables, 9997 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 16383/18816 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/Problem17_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-12-21-075.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-12-21-075.csv Completed graceful shutdown