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_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:16:00,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:16:00,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:16:00,055 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:16:00,057 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:16:00,058 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:16:00,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:16:00,063 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:16:00,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:16:00,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:16:00,069 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:16:00,069 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:16:00,070 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:16:00,072 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:16:00,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:16:00,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:16:00,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:16:00,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:16:00,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:16:00,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:16:00,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:16:00,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:16:00,095 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:16:00,095 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:16:00,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:16:00,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:16:00,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:16:00,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:16:00,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:16:00,104 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:16:00,104 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:16:00,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:16:00,105 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:16:00,105 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:16:00,106 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:16:00,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:16:00,107 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 12:16:00,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:16:00,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:16:00,133 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:16:00,134 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:16:00,134 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:16:00,134 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:16:00,134 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:16:00,134 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:16:00,135 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:16:00,135 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:16:00,135 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:16:00,135 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:16:00,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:16:00,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:16:00,137 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:16:00,137 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:16:00,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:16:00,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:16:00,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:16:00,139 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:16:00,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:16:00,139 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:16:00,140 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:16:00,140 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:16:00,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:16:00,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:16:00,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:16:00,141 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:16:00,141 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:16:00,141 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:16:00,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:16:00,142 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:16:00,142 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:16:00,142 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:16:00,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:16:00,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:16:00,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:16:00,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:16:00,227 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:16:00,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label08_false-unreach-call.c [2018-11-07 12:16:00,290 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644a96b58/8eb6b12dd344416aa1bfd55ada29d793/FLAGb24449d82 [2018-11-07 12:16:00,920 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:16:00,921 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label08_false-unreach-call.c [2018-11-07 12:16:00,938 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644a96b58/8eb6b12dd344416aa1bfd55ada29d793/FLAGb24449d82 [2018-11-07 12:16:00,953 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644a96b58/8eb6b12dd344416aa1bfd55ada29d793 [2018-11-07 12:16:00,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:16:00,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:16:00,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:16:00,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:16:00,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:16:00,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:00" (1/1) ... [2018-11-07 12:16:00,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:00, skipping insertion in model container [2018-11-07 12:16:00,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:00" (1/1) ... [2018-11-07 12:16:00,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:16:01,079 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:16:01,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:16:01,845 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:16:02,087 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:16:02,112 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:16:02,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02 WrapperNode [2018-11-07 12:16:02,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:16:02,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:16:02,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:16:02,114 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:16:02,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:16:02,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:16:02,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:16:02,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:16:02,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (1/1) ... [2018-11-07 12:16:02,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:16:02,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:16:02,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:16:02,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:16:02,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (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 12:16:02,521 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:16:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:16:02,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:16:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:16:02,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:16:02,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:16:02,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:16:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:16:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:16:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:16:02,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:16:08,276 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:16:08,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:08 BoogieIcfgContainer [2018-11-07 12:16:08,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:16:08,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:16:08,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:16:08,282 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:16:08,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:16:00" (1/3) ... [2018-11-07 12:16:08,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:08, skipping insertion in model container [2018-11-07 12:16:08,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:02" (2/3) ... [2018-11-07 12:16:08,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:08, skipping insertion in model container [2018-11-07 12:16:08,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:08" (3/3) ... [2018-11-07 12:16:08,286 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label08_false-unreach-call.c [2018-11-07 12:16:08,296 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:16:08,305 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:16:08,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:16:08,363 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:16:08,363 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:16:08,363 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:16:08,364 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:16:08,364 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:16:08,364 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:16:08,364 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:16:08,364 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:16:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 12:16:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-07 12:16:08,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:16:08,411 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] [2018-11-07 12:16:08,413 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:16:08,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:08,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2042869364, now seen corresponding path program 1 times [2018-11-07 12:16:08,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:16:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:08,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:16:08,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:08,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:16:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:16:08,879 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:16:08,957 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 12:16:08,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:16:08,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:16:08,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:16:08,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:16:08,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:16:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:16:08,991 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 12:16:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:16:11,986 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 12:16:11,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:16:11,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-07 12:16:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:16:12,015 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 12:16:12,016 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 12:16:12,026 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 12:16:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 12:16:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 12:16:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 12:16:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-07 12:16:12,137 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 24 [2018-11-07 12:16:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:16:12,137 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-07 12:16:12,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:16:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-07 12:16:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 12:16:12,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:16:12,147 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:16:12,149 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:16:12,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2102381266, now seen corresponding path program 1 times [2018-11-07 12:16:12,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:16:12,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:12,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:16:12,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:12,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:16:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:16:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:16:12,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:16:12,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:16:12,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:16:12,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:16:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:16:12,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:16:12,540 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-07 12:16:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:16:20,783 INFO L93 Difference]: Finished difference Result 2960 states and 5503 transitions. [2018-11-07 12:16:20,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 12:16:20,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 12:16:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:16:20,813 INFO L225 Difference]: With dead ends: 2960 [2018-11-07 12:16:20,813 INFO L226 Difference]: Without dead ends: 2222 [2018-11-07 12:16:20,829 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 [2018-11-07 12:16:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-11-07 12:16:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2174. [2018-11-07 12:16:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-11-07 12:16:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3685 transitions. [2018-11-07 12:16:20,950 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3685 transitions. Word has length 100 [2018-11-07 12:16:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:16:20,951 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 3685 transitions. [2018-11-07 12:16:20,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:16:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3685 transitions. [2018-11-07 12:16:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 12:16:20,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:16:20,957 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:16:20,957 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:16:20,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:20,957 INFO L82 PathProgramCache]: Analyzing trace with hash -830795674, now seen corresponding path program 1 times [2018-11-07 12:16:20,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:16:20,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:20,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:16:20,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:20,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:16:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:16:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:16:21,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:16:21,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:16:21,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:16:21,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:16:21,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:16:21,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:16:21,156 INFO L87 Difference]: Start difference. First operand 2174 states and 3685 transitions. Second operand 6 states. [2018-11-07 12:16:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:16:26,897 INFO L93 Difference]: Finished difference Result 7698 states and 13654 transitions. [2018-11-07 12:16:26,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:16:26,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-07 12:16:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:16:26,945 INFO L225 Difference]: With dead ends: 7698 [2018-11-07 12:16:26,945 INFO L226 Difference]: Without dead ends: 5530 [2018-11-07 12:16:26,977 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 12:16:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2018-11-07 12:16:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5473. [2018-11-07 12:16:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2018-11-07 12:16:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 8554 transitions. [2018-11-07 12:16:27,165 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 8554 transitions. Word has length 104 [2018-11-07 12:16:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:16:27,166 INFO L480 AbstractCegarLoop]: Abstraction has 5473 states and 8554 transitions. [2018-11-07 12:16:27,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:16:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 8554 transitions. [2018-11-07 12:16:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 12:16:27,172 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:16:27,172 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:16:27,172 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:16:27,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1219304098, now seen corresponding path program 1 times [2018-11-07 12:16:27,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:16:27,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:27,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:16:27,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:27,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:16:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:16:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:16:27,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:16:27,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:16:27,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:16:27,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:16:27,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:16:27,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:16:27,433 INFO L87 Difference]: Start difference. First operand 5473 states and 8554 transitions. Second operand 6 states. [2018-11-07 12:16:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:16:30,379 INFO L93 Difference]: Finished difference Result 12837 states and 21228 transitions. [2018-11-07 12:16:30,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:16:30,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 12:16:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:16:30,441 INFO L225 Difference]: With dead ends: 12837 [2018-11-07 12:16:30,441 INFO L226 Difference]: Without dead ends: 7370 [2018-11-07 12:16:30,481 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 12:16:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2018-11-07 12:16:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7296. [2018-11-07 12:16:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-11-07 12:16:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 11086 transitions. [2018-11-07 12:16:30,771 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 11086 transitions. Word has length 140 [2018-11-07 12:16:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:16:30,774 INFO L480 AbstractCegarLoop]: Abstraction has 7296 states and 11086 transitions. [2018-11-07 12:16:30,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:16:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 11086 transitions. [2018-11-07 12:16:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 12:16:30,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:16:30,786 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:16:30,786 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:16:30,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 365770004, now seen corresponding path program 1 times [2018-11-07 12:16:30,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:16:30,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:30,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:16:30,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:16:30,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:16:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:16:31,105 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:16:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 34 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:16:31,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:16:31,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:16:31,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-11-07 12:16:31,258 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [271], [273], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [721], [725], [728], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 12:16:31,318 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:16:31,319 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:16:32,093 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:16:32,099 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:16:32,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:16:32,143 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:16:32,875 INFO L227 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-07 12:16:32,877 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:16:33,280 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-11-07 12:16:33,280 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:16:33,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:16:33,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 12:16:33,282 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:16:33,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 12:16:33,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 12:16:33,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:16:33,287 INFO L87 Difference]: Start difference. First operand 7296 states and 11086 transitions. Second operand 10 states. [2018-11-07 12:16:37,956 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