java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:29:31,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:29:31,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:29:31,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:29:31,074 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:29:31,075 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:29:31,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:29:31,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:29:31,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:29:31,080 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:29:31,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:29:31,081 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:29:31,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:29:31,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:29:31,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:29:31,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:29:31,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:29:31,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:29:31,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:29:31,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:29:31,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:29:31,094 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:29:31,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:29:31,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:29:31,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:29:31,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:29:31,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:29:31,099 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:29:31,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:29:31,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:29:31,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:29:31,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:29:31,102 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:29:31,103 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:29:31,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:29:31,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:29:31,105 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:29:31,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:29:31,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:29:31,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:29:31,136 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:29:31,136 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:29:31,136 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:29:31,137 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:29:31,137 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:29:31,137 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:29:31,137 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:29:31,137 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:29:31,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:29:31,139 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:29:31,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:29:31,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:29:31,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:29:31,140 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:29:31,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:29:31,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:29:31,140 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:29:31,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:29:31,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:29:31,141 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:29:31,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:29:31,143 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:29:31,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:29:31,143 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:29:31,144 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:29:31,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:29:31,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:29:31,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:29:31,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:29:31,215 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:29:31,216 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-14 17:29:31,561 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6f1309b/e2bbab54b0634a47a6fb58072fbeb6cc/FLAGfd81d6fa1 [2018-09-14 17:29:32,016 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:29:32,017 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-14 17:29:32,050 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6f1309b/e2bbab54b0634a47a6fb58072fbeb6cc/FLAGfd81d6fa1 [2018-09-14 17:29:32,068 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6f1309b/e2bbab54b0634a47a6fb58072fbeb6cc [2018-09-14 17:29:32,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:29:32,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:29:32,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:32,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:29:32,093 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:29:32,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:32" (1/1) ... [2018-09-14 17:29:32,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f06a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:32, skipping insertion in model container [2018-09-14 17:29:32,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:32" (1/1) ... [2018-09-14 17:29:32,112 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:29:33,520 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:33,538 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:29:34,175 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:34,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34 WrapperNode [2018-09-14 17:29:34,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:34,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:34,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:29:34,618 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:29:34,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:34,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:34,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:34,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:29:34,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:29:34,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:29:35,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:35,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:35,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:35,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:36,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:36,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:36,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... [2018-09-14 17:29:36,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:29:36,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:29:36,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:29:36,198 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:29:36,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:29:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:29:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:29:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:29:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:29:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:29:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:29:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:29:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:29:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:29:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:29:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:29:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:29:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:29:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:29:47,244 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:29:47,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:47 BoogieIcfgContainer [2018-09-14 17:29:47,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:29:47,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:29:47,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:29:47,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:29:47,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:29:32" (1/3) ... [2018-09-14 17:29:47,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f35e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:47, skipping insertion in model container [2018-09-14 17:29:47,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:34" (2/3) ... [2018-09-14 17:29:47,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f35e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:47, skipping insertion in model container [2018-09-14 17:29:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:47" (3/3) ... [2018-09-14 17:29:47,253 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-09-14 17:29:47,263 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:29:47,273 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:29:47,336 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:29:47,337 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:29:47,337 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:29:47,337 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:29:47,337 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:29:47,337 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:29:47,338 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:29:47,338 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:29:47,338 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:29:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:29:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-14 17:29:47,400 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:47,402 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:29:47,403 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1465464788, now seen corresponding path program 1 times [2018-09-14 17:29:47,412 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:47,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:47,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:47,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:47,463 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:47,931 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 17:29:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:47,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:47,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:29:47,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:47,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:29:47,973 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:29:47,974 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:29:47,976 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-14 17:30:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:02,730 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-09-14 17:30:02,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:30:02,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-09-14 17:30:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:02,780 INFO L225 Difference]: With dead ends: 4063 [2018-09-14 17:30:02,780 INFO L226 Difference]: Without dead ends: 2937 [2018-09-14 17:30:02,793 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 17:30:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-09-14 17:30:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-09-14 17:30:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-09-14 17:30:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-09-14 17:30:02,989 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 64 [2018-09-14 17:30:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:02,992 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-09-14 17:30:02,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:30:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-09-14 17:30:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-14 17:30:03,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:03,002 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:03,004 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1113995663, now seen corresponding path program 1 times [2018-09-14 17:30:03,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:03,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:03,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:03,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:03,006 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:03,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:03,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:03,360 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:03,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:03,362 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:03,362 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:03,363 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-09-14 17:30:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:19,969 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-09-14 17:30:19,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:19,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-09-14 17:30:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:20,004 INFO L225 Difference]: With dead ends: 7277 [2018-09-14 17:30:20,004 INFO L226 Difference]: Without dead ends: 5301 [2018-09-14 17:30:20,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:30:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-09-14 17:30:20,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-09-14 17:30:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-09-14 17:30:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-09-14 17:30:20,161 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 135 [2018-09-14 17:30:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:20,162 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-09-14 17:30:20,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-09-14 17:30:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-14 17:30:20,167 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:20,167 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:20,167 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -303243424, now seen corresponding path program 1 times [2018-09-14 17:30:20,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:20,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:20,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:20,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:20,169 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:20,371 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:20,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:20,372 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:20,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:20,372 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:20,373 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:20,373 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-09-14 17:30:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:33,238 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-09-14 17:30:33,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:33,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-09-14 17:30:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:33,288 INFO L225 Difference]: With dead ends: 13914 [2018-09-14 17:30:33,288 INFO L226 Difference]: Without dead ends: 8668 [2018-09-14 17:30:33,309 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:30:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-09-14 17:30:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-09-14 17:30:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-09-14 17:30:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-09-14 17:30:33,502 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 138 [2018-09-14 17:30:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:33,503 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-09-14 17:30:33,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-09-14 17:30:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:30:33,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:33,507 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:33,507 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:33,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1626850484, now seen corresponding path program 1 times [2018-09-14 17:30:33,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:33,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:33,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:33,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:33,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:33,802 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:33,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:30:33,802 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:33,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:33,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:33,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:30:33,803 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-09-14 17:30:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:46,538 INFO L93 Difference]: Finished difference Result 25982 states and 40339 transitions. [2018-09-14 17:30:46,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:30:46,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-09-14 17:30:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:46,636 INFO L225 Difference]: With dead ends: 25982 [2018-09-14 17:30:46,637 INFO L226 Difference]: Without dead ends: 17383 [2018-09-14 17:30:46,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:30:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17383 states. [2018-09-14 17:30:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17383 to 17120. [2018-09-14 17:30:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17120 states. [2018-09-14 17:30:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 24327 transitions. [2018-09-14 17:30:47,250 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 24327 transitions. Word has length 148 [2018-09-14 17:30:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:47,251 INFO L480 AbstractCegarLoop]: Abstraction has 17120 states and 24327 transitions. [2018-09-14 17:30:47,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:30:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 24327 transitions. [2018-09-14 17:30:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-14 17:30:47,259 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:47,259 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:47,259 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:47,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2091389760, now seen corresponding path program 1 times [2018-09-14 17:30:47,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:47,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:47,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:47,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:47,264 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:47,533 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:47,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:30:47,534 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:47,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:30:47,535 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:30:47,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:30:47,535 INFO L87 Difference]: Start difference. First operand 17120 states and 24327 transitions. Second operand 4 states. [2018-09-14 17:30:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:59,700 INFO L93 Difference]: Finished difference Result 41061 states and 60639 transitions. [2018-09-14 17:30:59,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:30:59,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-09-14 17:30:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:59,827 INFO L225 Difference]: With dead ends: 41061 [2018-09-14 17:30:59,827 INFO L226 Difference]: Without dead ends: 23947 [2018-09-14 17:30:59,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:30:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23947 states. [2018-09-14 17:31:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23947 to 23901. [2018-09-14 17:31:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23901 states. [2018-09-14 17:31:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23901 states to 23901 states and 33757 transitions. [2018-09-14 17:31:00,822 INFO L78 Accepts]: Start accepts. Automaton has 23901 states and 33757 transitions. Word has length 165 [2018-09-14 17:31:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:00,823 INFO L480 AbstractCegarLoop]: Abstraction has 23901 states and 33757 transitions. [2018-09-14 17:31:00,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:31:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 23901 states and 33757 transitions. [2018-09-14 17:31:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-14 17:31:00,832 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:00,833 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:00,833 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:00,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1502543096, now seen corresponding path program 1 times [2018-09-14 17:31:00,834 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:00,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:00,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:00,835 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:01,089 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:31:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:01,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:31:01,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:31:01,478 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:01,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:31:01,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:31:01,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:31:01,480 INFO L87 Difference]: Start difference. First operand 23901 states and 33757 transitions. Second operand 6 states. [2018-09-14 17:31:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:13,650 INFO L93 Difference]: Finished difference Result 65342 states and 103816 transitions. [2018-09-14 17:31:13,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:31:13,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-09-14 17:31:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:13,852 INFO L225 Difference]: With dead ends: 65342 [2018-09-14 17:31:13,853 INFO L226 Difference]: Without dead ends: 41447 [2018-09-14 17:31:13,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:31:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41447 states. [2018-09-14 17:31:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41447 to 41295. [2018-09-14 17:31:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41295 states. [2018-09-14 17:31:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41295 states to 41295 states and 60244 transitions. [2018-09-14 17:31:15,224 INFO L78 Accepts]: Start accepts. Automaton has 41295 states and 60244 transitions. Word has length 174 [2018-09-14 17:31:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:15,225 INFO L480 AbstractCegarLoop]: Abstraction has 41295 states and 60244 transitions. [2018-09-14 17:31:15,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:31:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 41295 states and 60244 transitions. [2018-09-14 17:31:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-14 17:31:15,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:15,238 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:15,238 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash -621888907, now seen corresponding path program 1 times [2018-09-14 17:31:15,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:15,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:15,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:15,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:15,240 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:15,564 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:31:15,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:31:15,565 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:15,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:31:15,566 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:31:15,566 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:31:15,566 INFO L87 Difference]: Start difference. First operand 41295 states and 60244 transitions. Second operand 6 states. [2018-09-14 17:31:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:38,982 INFO L93 Difference]: Finished difference Result 138745 states and 237867 transitions. [2018-09-14 17:31:38,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:31:38,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2018-09-14 17:31:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:39,679 INFO L225 Difference]: With dead ends: 138745 [2018-09-14 17:31:39,679 INFO L226 Difference]: Without dead ends: 97456 [2018-09-14 17:31:39,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:31:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97456 states. [2018-09-14 17:31:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97456 to 96919. [2018-09-14 17:31:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96919 states. [2018-09-14 17:31:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96919 states to 96919 states and 141593 transitions. [2018-09-14 17:31:42,849 INFO L78 Accepts]: Start accepts. Automaton has 96919 states and 141593 transitions. Word has length 222 [2018-09-14 17:31:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:42,850 INFO L480 AbstractCegarLoop]: Abstraction has 96919 states and 141593 transitions. [2018-09-14 17:31:42,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:31:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 96919 states and 141593 transitions. [2018-09-14 17:31:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-14 17:31:42,882 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:42,882 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:31:42,883 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:42,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1548106794, now seen corresponding path program 1 times [2018-09-14 17:31:42,883 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:42,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:42,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:42,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:42,885 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:43,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:43,193 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:43,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:43,202 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:43,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-14 17:31:43,612 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-14 17:31:43,983 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:31:43,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:31:43,983 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:43,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:31:43,985 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:31:43,985 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:31:43,985 INFO L87 Difference]: Start difference. First operand 96919 states and 141593 transitions. Second operand 3 states. [2018-09-14 17:32:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:03,103 INFO L93 Difference]: Finished difference Result 208411 states and 315453 transitions. [2018-09-14 17:32:03,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:32:03,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-09-14 17:32:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:03,898 INFO L225 Difference]: With dead ends: 208411 [2018-09-14 17:32:03,898 INFO L226 Difference]: Without dead ends: 127560 [2018-09-14 17:32:04,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:32:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127560 states. [2018-09-14 17:32:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127560 to 127560. [2018-09-14 17:32:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127560 states. [2018-09-14 17:32:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127560 states to 127560 states and 181588 transitions. [2018-09-14 17:32:08,333 INFO L78 Accepts]: Start accepts. Automaton has 127560 states and 181588 transitions. Word has length 295 [2018-09-14 17:32:08,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:08,334 INFO L480 AbstractCegarLoop]: Abstraction has 127560 states and 181588 transitions. [2018-09-14 17:32:08,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:32:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 127560 states and 181588 transitions. [2018-09-14 17:32:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-14 17:32:08,364 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:08,365 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:32:08,365 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash 179355555, now seen corresponding path program 1 times [2018-09-14 17:32:08,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:08,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:08,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:08,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:08,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 173 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:32:08,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:08,834 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:32:08,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:08,842 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:08,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-14 17:32:09,085 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-14 17:32:09,278 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:32:09,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-14 17:32:09,278 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:09,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:32:09,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:32:09,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:32:09,279 INFO L87 Difference]: Start difference. First operand 127560 states and 181588 transitions. Second operand 3 states. [2018-09-14 17:32:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:18,482 INFO L93 Difference]: Finished difference Result 265597 states and 381212 transitions. [2018-09-14 17:32:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:32:18,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-09-14 17:32:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:18,946 INFO L225 Difference]: With dead ends: 265597 [2018-09-14 17:32:18,946 INFO L226 Difference]: Without dead ends: 138043 [2018-09-14 17:32:19,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 654 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:32:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138043 states. [2018-09-14 17:32:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138043 to 134814. [2018-09-14 17:32:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134814 states. [2018-09-14 17:32:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134814 states to 134814 states and 179850 transitions. [2018-09-14 17:32:22,303 INFO L78 Accepts]: Start accepts. Automaton has 134814 states and 179850 transitions. Word has length 327 [2018-09-14 17:32:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:22,304 INFO L480 AbstractCegarLoop]: Abstraction has 134814 states and 179850 transitions. [2018-09-14 17:32:22,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:32:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 134814 states and 179850 transitions. [2018-09-14 17:32:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-09-14 17:32:22,350 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:22,350 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:32:22,351 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2093479608, now seen corresponding path program 1 times [2018-09-14 17:32:22,351 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:22,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:22,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:22,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:22,352 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:22,770 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:32:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 115 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-14 17:32:23,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:23,389 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:32:23,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:23,408 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:23,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:23,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:32:25,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:25,375 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:32:25,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:25,391 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:25,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:32:26,081 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:32:26,629 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:32:26,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 17:32:26,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:26,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:26,631 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:26,631 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:32:26,631 INFO L87 Difference]: Start difference. First operand 134814 states and 179850 transitions. Second operand 5 states. [2018-09-14 17:32:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:38,062 INFO L93 Difference]: Finished difference Result 251773 states and 340103 transitions. [2018-09-14 17:32:38,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:32:38,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 401 [2018-09-14 17:32:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:38,395 INFO L225 Difference]: With dead ends: 251773 [2018-09-14 17:32:38,395 INFO L226 Difference]: Without dead ends: 129744 [2018-09-14 17:32:38,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1612 GetRequests, 1592 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:32:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129744 states. [2018-09-14 17:32:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129744 to 129742. [2018-09-14 17:32:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129742 states. [2018-09-14 17:32:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129742 states to 129742 states and 159279 transitions. [2018-09-14 17:32:40,606 INFO L78 Accepts]: Start accepts. Automaton has 129742 states and 159279 transitions. Word has length 401 [2018-09-14 17:32:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:40,606 INFO L480 AbstractCegarLoop]: Abstraction has 129742 states and 159279 transitions. [2018-09-14 17:32:40,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:32:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 129742 states and 159279 transitions. [2018-09-14 17:32:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-14 17:32:40,631 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:40,632 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:32:40,632 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:40,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1895869799, now seen corresponding path program 1 times [2018-09-14 17:32:40,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:40,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:40,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:40,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:40,634 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:32:41,777 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:32:41,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:32:41,777 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:32:41,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:32:41,778 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:32:41,778 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:32:41,778 INFO L87 Difference]: Start difference. First operand 129742 states and 159279 transitions. Second operand 5 states. [2018-09-14 17:32:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:59,480 INFO L93 Difference]: Finished difference Result 270780 states and 345203 transitions. [2018-09-14 17:32:59,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 17:32:59,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2018-09-14 17:32:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:59,935 INFO L225 Difference]: With dead ends: 270780 [2018-09-14 17:32:59,935 INFO L226 Difference]: Without dead ends: 157106 [2018-09-14 17:33:00,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:33:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157106 states. [2018-09-14 17:33:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157106 to 152791. [2018-09-14 17:33:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152791 states. [2018-09-14 17:33:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152791 states to 152791 states and 190475 transitions. [2018-09-14 17:33:03,602 INFO L78 Accepts]: Start accepts. Automaton has 152791 states and 190475 transitions. Word has length 414 [2018-09-14 17:33:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:03,603 INFO L480 AbstractCegarLoop]: Abstraction has 152791 states and 190475 transitions. [2018-09-14 17:33:03,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:33:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 152791 states and 190475 transitions. [2018-09-14 17:33:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-09-14 17:33:03,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:03,626 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:33:03,626 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:03,626 INFO L82 PathProgramCache]: Analyzing trace with hash 534462927, now seen corresponding path program 1 times [2018-09-14 17:33:03,626 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:03,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:03,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:03,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:03,627 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-09-14 17:33:03,965 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:33:03,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:33:03,965 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:03,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:33:03,966 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:33:03,966 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:33:03,966 INFO L87 Difference]: Start difference. First operand 152791 states and 190475 transitions. Second operand 4 states. [2018-09-14 17:33:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:09,840 INFO L93 Difference]: Finished difference Result 288668 states and 362465 transitions. [2018-09-14 17:33:09,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:09,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2018-09-14 17:33:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:10,201 INFO L225 Difference]: With dead ends: 288668 [2018-09-14 17:33:10,201 INFO L226 Difference]: Without dead ends: 151945 [2018-09-14 17:33:10,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:33:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151945 states. [2018-09-14 17:33:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151945 to 151940. [2018-09-14 17:33:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151940 states. [2018-09-14 17:33:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151940 states to 151940 states and 189355 transitions. [2018-09-14 17:33:12,882 INFO L78 Accepts]: Start accepts. Automaton has 151940 states and 189355 transitions. Word has length 473 [2018-09-14 17:33:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:12,883 INFO L480 AbstractCegarLoop]: Abstraction has 151940 states and 189355 transitions. [2018-09-14 17:33:12,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:33:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 151940 states and 189355 transitions. [2018-09-14 17:33:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-09-14 17:33:13,029 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:13,030 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:33:13,030 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:13,030 INFO L82 PathProgramCache]: Analyzing trace with hash 672731157, now seen corresponding path program 1 times [2018-09-14 17:33:13,030 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:13,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:13,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:13,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:13,031 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 241 proven. 4 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2018-09-14 17:33:13,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:13,505 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:33:13,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:13,514 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:13,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2018-09-14 17:33:14,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 241 proven. 4 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2018-09-14 17:33:14,912 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:33:14,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 17:33:14,912 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:33:14,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:33:14,913 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:33:14,913 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:33:14,913 INFO L87 Difference]: Start difference. First operand 151940 states and 189355 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 17:33:15,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:33:15,850 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:33:15,855 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:33:15,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:33:15 BoogieIcfgContainer [2018-09-14 17:33:15,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:33:15,857 INFO L168 Benchmark]: Toolchain (without parser) took 223775.48 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,858 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 17:33:15,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2532.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 324.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,860 INFO L168 Benchmark]: Boogie Preprocessor took 1254.70 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,861 INFO L168 Benchmark]: RCFGBuilder took 11046.67 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -28.1 MB). Peak memory consumption was 766.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,862 INFO L168 Benchmark]: TraceAbstraction took 208610.41 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -274.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 17:33:15,867 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 2532.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 324.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1254.70 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11046.67 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -28.1 MB). Peak memory consumption was 766.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208610.41 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -274.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (151940states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (5572 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 208.5s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 174.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8054 SDtfs, 36695 SDslu, 5235 SDs, 0 SdLazy, 61050 SolverSat, 15459 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 138.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4642 GetRequests, 4560 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152791occurred in iteration=11, 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: 21.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 9616 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 6082 NumberOfCodeBlocks, 6082 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8334 ConstructedInterpolants, 0 QuantifiedInterpolants, 7504819 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3469 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 23 InterpolantComputations, 14 PerfectInterpolantSequences, 6784/6866 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label13_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-33-15-885.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label13_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-33-15-885.csv Completed graceful shutdown