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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:15:43,214 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:15:43,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:15:43,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:15:43,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:15:43,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:15:43,240 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:15:43,242 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:15:43,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:15:43,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:15:43,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:15:43,250 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:15:43,251 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:15:43,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:15:43,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:15:43,266 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:15:43,267 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:15:43,270 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:15:43,273 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:15:43,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:15:43,275 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:15:43,277 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:15:43,279 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:15:43,279 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:15:43,279 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:15:43,280 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:15:43,281 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:15:43,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:15:43,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:15:43,283 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:15:43,284 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:15:43,284 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:15:43,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:15:43,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:15:43,286 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:15:43,286 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:15:43,287 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-LIM.epf [2018-11-12 16:15:43,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:15:43,308 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:15:43,309 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:15:43,309 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:15:43,310 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:15:43,310 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:15:43,310 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:15:43,310 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:15:43,310 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:15:43,311 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:15:43,311 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:15:43,311 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:15:43,311 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:15:43,312 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:15:43,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:15:43,313 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:15:43,313 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:15:43,313 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:15:43,313 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:15:43,314 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:15:43,314 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:15:43,314 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:15:43,314 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:15:43,314 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:15:43,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:15:43,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:15:43,315 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:15:43,315 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:15:43,315 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:15:43,316 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:15:43,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:15:43,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:15:43,318 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:15:43,318 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:15:43,318 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:15:43,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:15:43,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:15:43,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:15:43,404 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:15:43,404 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:15:43,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-11-12 16:15:43,465 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3cf17e6/37cd7de458bc438c98123b4bb2afa58b/FLAGd7b12f400 [2018-11-12 16:15:44,247 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:15:44,249 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-11-12 16:15:44,276 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3cf17e6/37cd7de458bc438c98123b4bb2afa58b/FLAGd7b12f400 [2018-11-12 16:15:44,293 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3cf17e6/37cd7de458bc438c98123b4bb2afa58b [2018-11-12 16:15:44,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:15:44,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:15:44,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:15:44,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:15:44,311 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:15:44,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:44" (1/1) ... [2018-11-12 16:15:44,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4158d789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:44, skipping insertion in model container [2018-11-12 16:15:44,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:44" (1/1) ... [2018-11-12 16:15:44,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:15:44,505 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:15:45,737 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:15:45,744 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:15:46,402 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:15:46,438 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:15:46,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46 WrapperNode [2018-11-12 16:15:46,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:15:46,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:15:46,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:15:46,440 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:15:46,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:15:46,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:15:46,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:15:46,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:15:46,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (1/1) ... [2018-11-12 16:15:46,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:15:46,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:15:46,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:15:46,998 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:15:46,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (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 [2018-11-12 16:15:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:15:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:15:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:15:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:15:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:15:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:15:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:15:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:15:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:15:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:15:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:15:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:15:47,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:15:47,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:15:47,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:15:56,439 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:15:56,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:56 BoogieIcfgContainer [2018-11-12 16:15:56,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:15:56,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:15:56,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:15:56,444 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:15:56,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:15:44" (1/3) ... [2018-11-12 16:15:56,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685fe60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:56, skipping insertion in model container [2018-11-12 16:15:56,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:46" (2/3) ... [2018-11-12 16:15:56,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685fe60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:56, skipping insertion in model container [2018-11-12 16:15:56,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:56" (3/3) ... [2018-11-12 16:15:56,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19_false-unreach-call.c [2018-11-12 16:15:56,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:15:56,468 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:15:56,486 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:15:56,529 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:15:56,529 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:15:56,530 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:15:56,530 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:15:56,530 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:15:56,530 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:15:56,530 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:15:56,530 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:15:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 16:15:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-12 16:15:56,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:56,579 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] [2018-11-12 16:15:56,582 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:56,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1723693075, now seen corresponding path program 1 times [2018-11-12 16:15:56,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:56,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:56,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:56,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:56,644 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:57,013 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:15:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:15:57,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:15:57,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:15:57,129 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:15:57,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:15:57,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:15:57,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:57,161 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-12 16:16:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:04,531 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-12 16:16:04,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:16:04,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-12 16:16:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:04,574 INFO L225 Difference]: With dead ends: 2446 [2018-11-12 16:16:04,574 INFO L226 Difference]: Without dead ends: 1604 [2018-11-12 16:16:04,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:16:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-12 16:16:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-12 16:16:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-12 16:16:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-12 16:16:04,792 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 21 [2018-11-12 16:16:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:04,793 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-12 16:16:04,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:16:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-12 16:16:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-12 16:16:04,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:04,801 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:16:04,803 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:04,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash 942951892, now seen corresponding path program 1 times [2018-11-12 16:16:04,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:04,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:04,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:04,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:04,807 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:05,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:05,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:16:05,163 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:05,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:16:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:16:05,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:16:05,166 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 5 states. [2018-11-12 16:16:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:15,871 INFO L93 Difference]: Finished difference Result 4892 states and 9215 transitions. [2018-11-12 16:16:15,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:16:15,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-11-12 16:16:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:15,894 INFO L225 Difference]: With dead ends: 4892 [2018-11-12 16:16:15,894 INFO L226 Difference]: Without dead ends: 3294 [2018-11-12 16:16:15,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:16:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2018-11-12 16:16:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3238. [2018-11-12 16:16:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3238 states. [2018-11-12 16:16:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 5447 transitions. [2018-11-12 16:16:16,035 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 5447 transitions. Word has length 99 [2018-11-12 16:16:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:16,036 INFO L480 AbstractCegarLoop]: Abstraction has 3238 states and 5447 transitions. [2018-11-12 16:16:16,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:16:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 5447 transitions. [2018-11-12 16:16:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-12 16:16:16,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:16,048 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:16:16,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:16,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1945763549, now seen corresponding path program 1 times [2018-11-12 16:16:16,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:16,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:16,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:16,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:16,050 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:16,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:16,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:16,310 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:16,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:16,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:16,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:16,311 INFO L87 Difference]: Start difference. First operand 3238 states and 5447 transitions. Second operand 6 states. [2018-11-12 16:16:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:27,050 INFO L93 Difference]: Finished difference Result 9755 states and 16532 transitions. [2018-11-12 16:16:27,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:16:27,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-12 16:16:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:27,092 INFO L225 Difference]: With dead ends: 9755 [2018-11-12 16:16:27,092 INFO L226 Difference]: Without dead ends: 6523 [2018-11-12 16:16:27,105 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 [2018-11-12 16:16:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2018-11-12 16:16:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6447. [2018-11-12 16:16:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6447 states. [2018-11-12 16:16:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 10238 transitions. [2018-11-12 16:16:27,299 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 10238 transitions. Word has length 112 [2018-11-12 16:16:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:27,300 INFO L480 AbstractCegarLoop]: Abstraction has 6447 states and 10238 transitions. [2018-11-12 16:16:27,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 10238 transitions. [2018-11-12 16:16:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-12 16:16:27,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:27,303 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:16:27,303 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:27,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:27,307 INFO L82 PathProgramCache]: Analyzing trace with hash 473756696, now seen corresponding path program 1 times [2018-11-12 16:16:27,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:27,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:27,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:27,309 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:27,599 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:16:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:27,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:27,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:27,637 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:27,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:27,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:27,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:27,638 INFO L87 Difference]: Start difference. First operand 6447 states and 10238 transitions. Second operand 6 states. [2018-11-12 16:16:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:35,015 INFO L93 Difference]: Finished difference Result 18061 states and 29694 transitions. [2018-11-12 16:16:35,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:16:35,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-12 16:16:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:35,079 INFO L225 Difference]: With dead ends: 18061 [2018-11-12 16:16:35,079 INFO L226 Difference]: Without dead ends: 11620 [2018-11-12 16:16:35,104 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:16:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2018-11-12 16:16:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11439. [2018-11-12 16:16:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11439 states. [2018-11-12 16:16:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11439 states to 11439 states and 17983 transitions. [2018-11-12 16:16:35,637 INFO L78 Accepts]: Start accepts. Automaton has 11439 states and 17983 transitions. Word has length 117 [2018-11-12 16:16:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:35,638 INFO L480 AbstractCegarLoop]: Abstraction has 11439 states and 17983 transitions. [2018-11-12 16:16:35,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11439 states and 17983 transitions. [2018-11-12 16:16:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 16:16:35,641 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:35,641 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:16:35,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:35,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash 286963880, now seen corresponding path program 1 times [2018-11-12 16:16:35,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:35,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:35,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:35,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:35,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:36,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:36,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:36,149 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:36,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:36,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:36,153 INFO L87 Difference]: Start difference. First operand 11439 states and 17983 transitions. Second operand 6 states. [2018-11-12 16:16:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:52,142 INFO L93 Difference]: Finished difference Result 46297 states and 82313 transitions. [2018-11-12 16:16:52,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:16:52,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-12 16:16:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:52,341 INFO L225 Difference]: With dead ends: 46297 [2018-11-12 16:16:52,341 INFO L226 Difference]: Without dead ends: 34864 [2018-11-12 16:16:52,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:16:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34864 states. [2018-11-12 16:16:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34864 to 34583. [2018-11-12 16:16:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34583 states. [2018-11-12 16:16:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34583 states to 34583 states and 53833 transitions. [2018-11-12 16:16:53,475 INFO L78 Accepts]: Start accepts. Automaton has 34583 states and 53833 transitions. Word has length 125 [2018-11-12 16:16:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:53,476 INFO L480 AbstractCegarLoop]: Abstraction has 34583 states and 53833 transitions. [2018-11-12 16:16:53,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 34583 states and 53833 transitions. [2018-11-12 16:16:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-12 16:16:53,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:53,480 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:16:53,481 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:53,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1547306367, now seen corresponding path program 1 times [2018-11-12 16:16:53,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:53,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:53,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:53,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:53,482 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:53,795 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:16:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:54,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:54,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:54,177 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:54,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:54,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:54,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:54,180 INFO L87 Difference]: Start difference. First operand 34583 states and 53833 transitions. Second operand 6 states. [2018-11-12 16:17:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:17:02,321 INFO L93 Difference]: Finished difference Result 84355 states and 142407 transitions. [2018-11-12 16:17:02,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:17:02,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-12 16:17:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:17:02,570 INFO L225 Difference]: With dead ends: 84355 [2018-11-12 16:17:02,570 INFO L226 Difference]: Without dead ends: 49778 [2018-11-12 16:17:02,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:17:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49778 states. [2018-11-12 16:17:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49778 to 49365. [2018-11-12 16:17:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49365 states. [2018-11-12 16:17:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49365 states to 49365 states and 75245 transitions. [2018-11-12 16:17:03,940 INFO L78 Accepts]: Start accepts. Automaton has 49365 states and 75245 transitions. Word has length 146 [2018-11-12 16:17:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:17:03,941 INFO L480 AbstractCegarLoop]: Abstraction has 49365 states and 75245 transitions. [2018-11-12 16:17:03,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:17:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 49365 states and 75245 transitions. [2018-11-12 16:17:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-12 16:17:03,947 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:17:03,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:17:03,947 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:17:03,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:03,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1989522588, now seen corresponding path program 1 times [2018-11-12 16:17:03,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:17:03,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:03,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:17:03,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:03,955 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:17:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:17:04,264 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:17:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:17:04,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:17:04,474 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:17:04,475 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-11-12 16:17:04,486 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1935], [1937], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:17:04,566 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:17:04,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:17:05,846 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:17:06,360 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:17:06,362 INFO L272 AbstractInterpreter]: Visited 153 different actions 300 times. Merged at 5 different actions 5 times. Never widened. Performed 4025 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4025 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:17:06,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:06,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:17:07,066 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 75.55% of their original sizes. [2018-11-12 16:17:07,066 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:17:08,395 INFO L415 sIntCurrentIteration]: We unified 166 AI predicates to 166 [2018-11-12 16:17:08,395 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:17:08,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:17:08,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-11-12 16:17:08,396 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:17:08,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:17:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:17:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:17:08,397 INFO L87 Difference]: Start difference. First operand 49365 states and 75245 transitions. Second operand 18 states. [2018-11-12 16:18:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:18:17,772 INFO L93 Difference]: Finished difference Result 100562 states and 152909 transitions. [2018-11-12 16:18:17,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:18:17,772 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 167 [2018-11-12 16:18:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:18:18,729 INFO L225 Difference]: With dead ends: 100562 [2018-11-12 16:18:18,730 INFO L226 Difference]: Without dead ends: 51203 [2018-11-12 16:18:18,886 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 16:18:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51203 states. [2018-11-12 16:18:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51203 to 51198. [2018-11-12 16:18:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51198 states. [2018-11-12 16:18:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51198 states to 51198 states and 77139 transitions. [2018-11-12 16:18:20,381 INFO L78 Accepts]: Start accepts. Automaton has 51198 states and 77139 transitions. Word has length 167 [2018-11-12 16:18:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:18:20,382 INFO L480 AbstractCegarLoop]: Abstraction has 51198 states and 77139 transitions. [2018-11-12 16:18:20,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:18:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51198 states and 77139 transitions. [2018-11-12 16:18:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-12 16:18:20,388 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:18:20,388 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:18:20,389 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:18:20,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1768286215, now seen corresponding path program 1 times [2018-11-12 16:18:20,389 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:18:20,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:20,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:18:20,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:20,390 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:18:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:18:20,717 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:18:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:18:21,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:18:21,657 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:18:21,657 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-12 16:18:21,658 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1935], [1937], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:18:21,665 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:18:21,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:18:21,965 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:18:22,297 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:18:22,298 INFO L272 AbstractInterpreter]: Visited 154 different actions 459 times. Merged at 7 different actions 19 times. Never widened. Performed 5912 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5912 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 16:18:22,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:22,339 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:18:22,802 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 75.03% of their original sizes. [2018-11-12 16:18:22,802 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:18:23,631 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-12 16:18:23,631 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:18:23,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:18:23,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-12 16:18:23,632 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:18:23,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:18:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:18:23,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:18:23,633 INFO L87 Difference]: Start difference. First operand 51198 states and 77139 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 16:19:18,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:19:18,886 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:19:18,892 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:19:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:19:18 BoogieIcfgContainer [2018-11-12 16:19:18,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:19:18,893 INFO L168 Benchmark]: Toolchain (without parser) took 214588.52 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 135.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,895 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:19:18,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2131.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,897 INFO L168 Benchmark]: Boogie Preprocessor took 228.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,897 INFO L168 Benchmark]: RCFGBuilder took 9442.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.2 MB). Peak memory consumption was 667.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,898 INFO L168 Benchmark]: TraceAbstraction took 202452.20 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:19:18,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2131.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 228.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9442.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.2 MB). Peak memory consumption was 667.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202452.20 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (51198states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (85581 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 202.3s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 186.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2462 SDtfs, 26163 SDslu, 1908 SDs, 0 SdLazy, 48422 SolverSat, 8126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 494 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51198occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9973285121031283 AbsIntWeakeningRatio, 0.11764705882352941 AbsIntAvgWeakeningVarsNumRemoved, 22.04656862745098 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1012 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1030 NumberOfCodeBlocks, 1030 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1022 ConstructedInterpolants, 0 QuantifiedInterpolants, 842790 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 172/188 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown