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/Problem18_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:32:59,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:32:59,054 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:32:59,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:32:59,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:32:59,073 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:32:59,075 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:32:59,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:32:59,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:32:59,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:32:59,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:32:59,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:32:59,085 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:32:59,088 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:32:59,096 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:32:59,100 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:32:59,101 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:32:59,103 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:32:59,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:32:59,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:32:59,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:32:59,120 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:32:59,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:32:59,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:32:59,126 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:32:59,129 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:32:59,130 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:32:59,131 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:32:59,137 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:32:59,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:32:59,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:32:59,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:32:59,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:32:59,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:32:59,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:32:59,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:32:59,146 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 12:32:59,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:32:59,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:32:59,173 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:32:59,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:32:59,174 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:32:59,174 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:32:59,174 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:32:59,174 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:32:59,174 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:32:59,175 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:32:59,175 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:32:59,175 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:32:59,176 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:32:59,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:32:59,177 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:32:59,177 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:32:59,177 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:32:59,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:32:59,179 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:32:59,179 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:32:59,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:32:59,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:32:59,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:32:59,180 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:32:59,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:32:59,181 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:32:59,181 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:32:59,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:32:59,182 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:32:59,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:32:59,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:32:59,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:32:59,183 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:32:59,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:32:59,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:32:59,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:32:59,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:32:59,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:32:59,285 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:32:59,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label20_false-unreach-call.c [2018-11-07 12:32:59,358 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/628204f9c/1498ea26bdae427fa4f4b79be3021368/FLAGb9eddf72f [2018-11-07 12:33:00,099 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:33:00,100 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label20_false-unreach-call.c [2018-11-07 12:33:00,129 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/628204f9c/1498ea26bdae427fa4f4b79be3021368/FLAGb9eddf72f [2018-11-07 12:33:00,148 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/628204f9c/1498ea26bdae427fa4f4b79be3021368 [2018-11-07 12:33:00,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:33:00,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:33:00,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:33:00,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:33:00,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:33:00,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:00" (1/1) ... [2018-11-07 12:33:00,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2d9c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:00, skipping insertion in model container [2018-11-07 12:33:00,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:00" (1/1) ... [2018-11-07 12:33:00,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:33:00,327 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:33:01,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:33:01,372 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:33:01,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:33:01,930 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:33:01,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01 WrapperNode [2018-11-07 12:33:01,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:33:01,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:33:01,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:33:01,932 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:33:01,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:33:02,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:33:02,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:33:02,217 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:33:02,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (1/1) ... [2018-11-07 12:33:02,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:33:02,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:33:02,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:33:02,487 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:33:02,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (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 12:33:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:33:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:33:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:33:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:33:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:33:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:33:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:33:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:33:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:33:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:33:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:33:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:33:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:33:10,900 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:33:10,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:10 BoogieIcfgContainer [2018-11-07 12:33:10,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:33:10,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:33:10,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:33:10,907 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:33:10,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:33:00" (1/3) ... [2018-11-07 12:33:10,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be8b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:10, skipping insertion in model container [2018-11-07 12:33:10,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01" (2/3) ... [2018-11-07 12:33:10,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be8b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:10, skipping insertion in model container [2018-11-07 12:33:10,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:10" (3/3) ... [2018-11-07 12:33:10,910 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label20_false-unreach-call.c [2018-11-07 12:33:10,921 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:33:10,933 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:33:10,951 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:33:10,999 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:33:11,000 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:33:11,000 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:33:11,000 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:33:11,000 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:33:11,000 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:33:11,001 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:33:11,001 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:33:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 12:33:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 12:33:11,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:11,058 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:33:11,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:11,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1382833663, now seen corresponding path program 1 times [2018-11-07 12:33:11,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:11,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:11,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:11,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:11,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:11,475 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:33:11,515 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 12:33:11,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:33:11,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:33:11,519 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:11,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:33:11,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:33:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:33:11,550 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 12:33:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:33:18,537 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 12:33:18,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:33:18,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-07 12:33:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:33:18,575 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 12:33:18,575 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 12:33:18,587 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 12:33:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 12:33:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 12:33:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 12:33:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 12:33:18,737 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 13 [2018-11-07 12:33:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:33:18,737 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 12:33:18,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:33:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 12:33:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 12:33:18,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:18,744 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:33:18,744 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:18,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash -203266796, now seen corresponding path program 1 times [2018-11-07 12:33:18,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:18,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:18,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:18,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:18,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:33:19,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:33:19,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:33:19,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:19,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:33:19,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:33:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:33:19,015 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 12:33:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:33:27,914 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 12:33:27,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:33:27,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-11-07 12:33:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:33:27,932 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 12:33:27,932 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 12:33:27,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:33:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 12:33:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 12:33:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 12:33:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 12:33:28,033 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 85 [2018-11-07 12:33:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:33:28,034 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 12:33:28,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:33:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 12:33:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 12:33:28,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:28,040 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:33:28,042 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:28,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:28,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1496525893, now seen corresponding path program 1 times [2018-11-07 12:33:28,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:28,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:28,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:28,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:28,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:33:28,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:33:28,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:33:28,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:28,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:33:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:33:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:33:28,314 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 12:33:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:33:35,867 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 12:33:35,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:33:35,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-07 12:33:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:33:35,896 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 12:33:35,897 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 12:33:35,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:33:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 12:33:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 12:33:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 12:33:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 12:33:36,013 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 108 [2018-11-07 12:33:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:33:36,014 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 12:33:36,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:33:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 12:33:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 12:33:36,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:36,017 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:33:36,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:36,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:36,017 INFO L82 PathProgramCache]: Analyzing trace with hash 885619213, now seen corresponding path program 1 times [2018-11-07 12:33:36,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:36,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:36,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:36,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:36,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:33:36,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:33:36,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:33:36,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:36,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:33:36,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:33:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:33:36,273 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 12:33:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:33:43,660 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 12:33:43,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:33:43,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 12:33:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:33:43,687 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 12:33:43,687 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 12:33:43,700 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 12:33:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 12:33:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 12:33:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 12:33:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 12:33:43,811 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 112 [2018-11-07 12:33:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:33:43,812 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 12:33:43,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:33:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 12:33:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 12:33:43,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:43,815 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:33:43,816 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:43,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:43,816 INFO L82 PathProgramCache]: Analyzing trace with hash 228991656, now seen corresponding path program 1 times [2018-11-07 12:33:43,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:43,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:43,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:43,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:43,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:44,090 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:33:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:33:44,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:33:44,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:33:44,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:44,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:33:44,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:33:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:33:44,269 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 12:33:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:33:49,881 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 12:33:49,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:33:49,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 12:33:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:33:49,920 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 12:33:49,920 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 12:33:49,935 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:33:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 12:33:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 12:33:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 12:33:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 12:33:50,107 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 143 [2018-11-07 12:33:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:33:50,107 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 12:33:50,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:33:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 12:33:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 12:33:50,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:33:50,111 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 12:33:50,112 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:33:50,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1774516114, now seen corresponding path program 1 times [2018-11-07 12:33:50,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:33:50,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:50,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:33:50,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:33:50,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:33:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:33:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:33:50,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:33:50,425 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:33:50,426 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-07 12:33:50,428 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1627], [1629], [1632], [1640], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 12:33:50,476 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:33:50,476 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:33:50,974 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:33:50,976 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:33:51,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:33:51,009 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:33:51,477 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 77.12% of their original sizes. [2018-11-07 12:33:51,477 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:33:51,636 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-07 12:33:51,636 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:33:51,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:33:51,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 12:33:51,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:33:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:33:51,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:33:51,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:33:51,638 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-11-07 12:33:59,654 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