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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:19:24,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:19:24,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:19:24,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:19:24,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:19:24,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:19:24,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:19:24,228 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:19:24,229 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:19:24,230 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:19:24,231 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:19:24,231 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:19:24,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:19:24,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:19:24,234 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:19:24,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:19:24,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:19:24,238 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:19:24,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:19:24,241 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:19:24,242 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:19:24,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:19:24,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:19:24,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:19:24,246 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:19:24,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:19:24,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:19:24,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:19:24,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:19:24,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:19:24,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:19:24,252 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:19:24,252 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:19:24,252 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:19:24,253 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:19:24,254 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:19:24,254 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:19:24,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:19:24,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:19:24,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:19:24,274 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:19:24,274 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:19:24,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:19:24,274 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:19:24,275 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:19:24,275 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:19:24,275 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:19:24,275 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:19:24,275 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:19:24,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:19:24,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:19:24,277 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:19:24,277 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:19:24,277 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:19:24,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:19:24,278 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:19:24,278 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:19:24,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:19:24,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:19:24,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:19:24,279 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:19:24,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:19:24,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:19:24,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:19:24,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:19:24,280 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:19:24,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:19:24,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:19:24,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:19:24,364 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:19:24,365 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:19:24,366 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-11-07 15:19:24,436 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e02a73d/ce617f9fc569406ba75c2730605d99cf/FLAG6403399fa [2018-11-07 15:19:25,135 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:19:25,137 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-11-07 15:19:25,157 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e02a73d/ce617f9fc569406ba75c2730605d99cf/FLAG6403399fa [2018-11-07 15:19:25,178 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e02a73d/ce617f9fc569406ba75c2730605d99cf [2018-11-07 15:19:25,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:19:25,190 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:19:25,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:19:25,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:19:25,199 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:19:25,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:19:25" (1/1) ... [2018-11-07 15:19:25,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb7d90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:25, skipping insertion in model container [2018-11-07 15:19:25,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:19:25" (1/1) ... [2018-11-07 15:19:25,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:19:25,316 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:19:26,202 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:19:26,207 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:19:26,481 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:19:26,504 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:19:26,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26 WrapperNode [2018-11-07 15:19:26,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:19:26,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:19:26,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:19:26,506 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:19:26,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:19:26,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:19:26,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:19:26,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:19:26,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (1/1) ... [2018-11-07 15:19:26,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:19:26,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:19:26,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:19:26,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:19:26,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (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 [2018-11-07 15:19:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:19:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:19:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:19:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:19:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:19:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:19:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:19:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:19:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:19:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:19:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:19:32,848 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:19:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:19:32 BoogieIcfgContainer [2018-11-07 15:19:32,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:19:32,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:19:32,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:19:32,854 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:19:32,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:19:25" (1/3) ... [2018-11-07 15:19:32,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec4f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:19:32, skipping insertion in model container [2018-11-07 15:19:32,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:19:26" (2/3) ... [2018-11-07 15:19:32,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec4f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:19:32, skipping insertion in model container [2018-11-07 15:19:32,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:19:32" (3/3) ... [2018-11-07 15:19:32,858 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label17_true-unreach-call.c [2018-11-07 15:19:32,868 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:19:32,877 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:19:32,892 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:19:32,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:19:32,933 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:19:32,933 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:19:32,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:19:32,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:19:32,934 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:19:32,934 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:19:32,934 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:19:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:19:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 15:19:32,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:32,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:19:32,985 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:32,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1724248043, now seen corresponding path program 1 times [2018-11-07 15:19:32,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:33,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:33,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:33,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:33,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:33,529 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:19:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:33,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:33,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:19:33,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:33,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:19:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:19:33,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:19:33,719 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 15:19:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:36,916 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 15:19:36,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:19:36,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-11-07 15:19:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:36,948 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 15:19:36,949 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 15:19:36,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:19:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 15:19:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 15:19:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:19:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 15:19:37,116 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 65 [2018-11-07 15:19:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:37,117 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 15:19:37,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:19:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 15:19:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 15:19:37,125 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:37,126 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:19:37,126 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:37,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 735694757, now seen corresponding path program 1 times [2018-11-07 15:19:37,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:37,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:37,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:37,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:37,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:37,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:37,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:37,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:37,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:37,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:37,450 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-11-07 15:19:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:42,997 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-11-07 15:19:42,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:42,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 15:19:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:43,012 INFO L225 Difference]: With dead ends: 2191 [2018-11-07 15:19:43,012 INFO L226 Difference]: Without dead ends: 1453 [2018-11-07 15:19:43,016 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 [2018-11-07 15:19:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-11-07 15:19:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-11-07 15:19:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 15:19:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-11-07 15:19:43,069 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 136 [2018-11-07 15:19:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:43,070 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-11-07 15:19:43,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-11-07 15:19:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 15:19:43,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:43,074 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:19:43,074 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:43,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1598709869, now seen corresponding path program 1 times [2018-11-07 15:19:43,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:43,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:43,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:43,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:43,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:43,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:43,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:43,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:43,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:43,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:43,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:43,349 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-11-07 15:19:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:47,734 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-11-07 15:19:47,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:47,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 15:19:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:47,751 INFO L225 Difference]: With dead ends: 3925 [2018-11-07 15:19:47,751 INFO L226 Difference]: Without dead ends: 2495 [2018-11-07 15:19:47,760 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 [2018-11-07 15:19:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-11-07 15:19:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-11-07 15:19:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-11-07 15:19:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-11-07 15:19:47,841 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 140 [2018-11-07 15:19:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:47,842 INFO L480 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-11-07 15:19:47,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-11-07 15:19:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 15:19:47,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:47,846 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:19:47,847 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:47,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -901457180, now seen corresponding path program 1 times [2018-11-07 15:19:47,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:47,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:47,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:47,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:47,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:48,104 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:19:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:48,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:48,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:48,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:48,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:48,268 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-11-07 15:19:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:52,314 INFO L93 Difference]: Finished difference Result 6987 states and 11546 transitions. [2018-11-07 15:19:52,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:52,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 15:19:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:52,356 INFO L225 Difference]: With dead ends: 6987 [2018-11-07 15:19:52,356 INFO L226 Difference]: Without dead ends: 4527 [2018-11-07 15:19:52,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:19:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2018-11-07 15:19:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4495. [2018-11-07 15:19:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2018-11-07 15:19:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6547 transitions. [2018-11-07 15:19:52,506 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6547 transitions. Word has length 171 [2018-11-07 15:19:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:52,507 INFO L480 AbstractCegarLoop]: Abstraction has 4495 states and 6547 transitions. [2018-11-07 15:19:52,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6547 transitions. [2018-11-07 15:19:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 15:19:52,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:52,513 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:19:52,514 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:52,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1025094140, now seen corresponding path program 1 times [2018-11-07 15:19:52,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:52,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:52,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:52,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:52,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:52,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:52,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:52,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:52,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:52,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:52,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:52,934 INFO L87 Difference]: Start difference. First operand 4495 states and 6547 transitions. Second operand 6 states. [2018-11-07 15:19:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:58,476 INFO L93 Difference]: Finished difference Result 17056 states and 26327 transitions. [2018-11-07 15:19:58,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:58,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2018-11-07 15:19:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:58,569 INFO L225 Difference]: With dead ends: 17056 [2018-11-07 15:19:58,570 INFO L226 Difference]: Without dead ends: 12567 [2018-11-07 15:19:58,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:19:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2018-11-07 15:19:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 12560. [2018-11-07 15:19:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12560 states. [2018-11-07 15:19:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12560 states to 12560 states and 17998 transitions. [2018-11-07 15:19:58,990 INFO L78 Accepts]: Start accepts. Automaton has 12560 states and 17998 transitions. Word has length 215 [2018-11-07 15:19:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:58,992 INFO L480 AbstractCegarLoop]: Abstraction has 12560 states and 17998 transitions. [2018-11-07 15:19:58,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 12560 states and 17998 transitions. [2018-11-07 15:19:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 15:19:59,025 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:59,025 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 15:19:59,026 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:59,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:59,027 INFO L82 PathProgramCache]: Analyzing trace with hash 473724549, now seen corresponding path program 1 times [2018-11-07 15:19:59,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:59,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:59,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:59,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:59,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:59,307 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:19:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 116 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:19:59,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:19:59,495 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:19:59,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 15:19:59,499 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:19:59,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:19:59,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:20:00,494 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:20:00,496 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:20:00,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:00,547 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:20:01,645 INFO L227 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 15:20:01,646 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:20:02,560 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-11-07 15:20:02,561 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:20:02,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:20:02,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 15:20:02,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:02,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 15:20:02,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 15:20:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:20:02,564 INFO L87 Difference]: Start difference. First operand 12560 states and 17998 transitions. Second operand 11 states. [2018-11-07 15:20:08,547 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown