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/Problem11_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:10:07,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:10:07,330 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:10:07,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:10:07,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:10:07,344 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:10:07,345 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:10:07,347 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:10:07,349 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:10:07,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:10:07,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:10:07,351 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:10:07,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:10:07,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:10:07,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:10:07,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:10:07,355 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:10:07,357 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:10:07,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:10:07,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:10:07,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:10:07,364 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:10:07,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:10:07,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:10:07,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:10:07,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:10:07,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:10:07,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:10:07,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:10:07,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:10:07,372 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:10:07,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:10:07,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:10:07,373 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:10:07,374 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:10:07,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:10:07,375 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 [2018-11-07 20:10:07,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:10:07,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:10:07,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:10:07,405 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:10:07,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:10:07,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:10:07,405 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:10:07,405 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:10:07,406 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:10:07,406 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:10:07,406 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:10:07,406 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:10:07,406 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:10:07,408 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:10:07,408 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:10:07,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:10:07,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:10:07,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:10:07,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:10:07,409 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:10:07,409 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:10:07,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:10:07,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:10:07,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:10:07,411 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:10:07,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:10:07,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:10:07,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:10:07,412 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:10:07,412 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:10:07,412 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:10:07,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:10:07,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:10:07,413 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:10:07,413 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:10:07,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:10:07,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:10:07,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:10:07,502 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:10:07,503 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:10:07,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-11-07 20:10:07,570 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf8c64ef/e5b95f63d8364f3da15701799ae54565/FLAG3ec2f5060 [2018-11-07 20:10:08,183 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:10:08,187 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-11-07 20:10:08,203 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf8c64ef/e5b95f63d8364f3da15701799ae54565/FLAG3ec2f5060 [2018-11-07 20:10:08,221 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf8c64ef/e5b95f63d8364f3da15701799ae54565 [2018-11-07 20:10:08,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:10:08,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:10:08,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:10:08,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:10:08,241 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:10:08,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:08" (1/1) ... [2018-11-07 20:10:08,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c35e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:08, skipping insertion in model container [2018-11-07 20:10:08,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:08" (1/1) ... [2018-11-07 20:10:08,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:10:08,350 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:10:09,014 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:10:09,024 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:10:09,216 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:10:09,235 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:10:09,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09 WrapperNode [2018-11-07 20:10:09,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:10:09,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:10:09,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:10:09,237 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:10:09,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:10:09,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:10:09,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:10:09,390 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:10:09,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (1/1) ... [2018-11-07 20:10:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:10:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:10:09,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:10:09,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:10:09,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (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 20:10:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:10:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:10:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:10:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:10:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:10:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:10:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:10:09,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:10:09,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:10:14,137 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:10:14,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:14 BoogieIcfgContainer [2018-11-07 20:10:14,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:10:14,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:10:14,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:10:14,142 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:10:14,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:10:08" (1/3) ... [2018-11-07 20:10:14,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:14, skipping insertion in model container [2018-11-07 20:10:14,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:09" (2/3) ... [2018-11-07 20:10:14,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:14, skipping insertion in model container [2018-11-07 20:10:14,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:14" (3/3) ... [2018-11-07 20:10:14,147 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label30_true-unreach-call.c [2018-11-07 20:10:14,157 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:10:14,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:10:14,187 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:10:14,228 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:10:14,229 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:10:14,229 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:10:14,229 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:10:14,229 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:10:14,229 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:10:14,230 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:10:14,230 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:10:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 20:10:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 20:10:14,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:14,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:10:14,272 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:14,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash 814847676, now seen corresponding path program 1 times [2018-11-07 20:10:14,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:14,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:14,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:14,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:14,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:14,747 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 20:10:14,759 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 20:10:14,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:10:14,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:10:14,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:10:14,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:10:14,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:10:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:10:14,790 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 20:10:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:18,082 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-07 20:10:18,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:10:18,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-07 20:10:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:18,110 INFO L225 Difference]: With dead ends: 1001 [2018-11-07 20:10:18,110 INFO L226 Difference]: Without dead ends: 702 [2018-11-07 20:10:18,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:10:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-07 20:10:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-07 20:10:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-07 20:10:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-07 20:10:18,240 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 36 [2018-11-07 20:10:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:10:18,241 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-07 20:10:18,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:10:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-07 20:10:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 20:10:18,251 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:18,251 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:18,252 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:18,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash -25993205, now seen corresponding path program 1 times [2018-11-07 20:10:18,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:18,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:18,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:18,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:18,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:18,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:10:18,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:10:18,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:10:18,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:10:18,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:10:18,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:10:18,667 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-07 20:10:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:24,544 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-07 20:10:24,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:10:24,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 20:10:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:24,567 INFO L225 Difference]: With dead ends: 2534 [2018-11-07 20:10:24,568 INFO L226 Difference]: Without dead ends: 1841 [2018-11-07 20:10:24,576 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 20:10:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-07 20:10:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-07 20:10:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-07 20:10:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-07 20:10:24,677 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 109 [2018-11-07 20:10:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:10:24,677 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-07 20:10:24,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:10:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-07 20:10:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 20:10:24,683 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:24,683 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:24,684 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:24,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:24,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1434902368, now seen corresponding path program 1 times [2018-11-07 20:10:24,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:24,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:24,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:24,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:24,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:24,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:10:24,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:10:24,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:10:24,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:10:24,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:10:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:10:24,845 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-07 20:10:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:27,331 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-11-07 20:10:27,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:10:27,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-11-07 20:10:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:27,355 INFO L225 Difference]: With dead ends: 4796 [2018-11-07 20:10:27,356 INFO L226 Difference]: Without dead ends: 2987 [2018-11-07 20:10:27,370 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:10:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-11-07 20:10:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-11-07 20:10:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-11-07 20:10:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-11-07 20:10:27,479 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 110 [2018-11-07 20:10:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:10:27,480 INFO L480 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-11-07 20:10:27,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:10:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-11-07 20:10:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 20:10:27,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:27,487 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:27,487 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:27,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash 579016823, now seen corresponding path program 1 times [2018-11-07 20:10:27,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:27,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:27,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:27,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:27,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:27,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:10:27,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:10:27,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:10:27,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:10:27,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:10:27,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:10:27,980 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-11-07 20:10:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:31,709 INFO L93 Difference]: Finished difference Result 11406 states and 20957 transitions. [2018-11-07 20:10:31,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:10:31,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 20:10:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:31,824 INFO L225 Difference]: With dead ends: 11406 [2018-11-07 20:10:31,824 INFO L226 Difference]: Without dead ends: 8442 [2018-11-07 20:10:31,911 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:10:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2018-11-07 20:10:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 7646. [2018-11-07 20:10:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7646 states. [2018-11-07 20:10:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 11154 transitions. [2018-11-07 20:10:32,244 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 11154 transitions. Word has length 135 [2018-11-07 20:10:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:10:32,244 INFO L480 AbstractCegarLoop]: Abstraction has 7646 states and 11154 transitions. [2018-11-07 20:10:32,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:10:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 11154 transitions. [2018-11-07 20:10:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 20:10:32,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:32,254 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:10:32,254 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:32,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:32,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1556909905, now seen corresponding path program 1 times [2018-11-07 20:10:32,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:32,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:32,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:32,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:32,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:32,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:10:32,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:10:32,676 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-11-07 20:10:32,679 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:10:32,725 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:10:32,726 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:10:33,259 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:10:33,262 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 20:10:33,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:33,313 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:10:33,764 INFO L227 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 73.3% of their original sizes. [2018-11-07 20:10:33,764 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:10:34,136 INFO L415 sIntCurrentIteration]: We unified 182 AI predicates to 182 [2018-11-07 20:10:34,136 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:10:34,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:10:34,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:10:34,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:10:34,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:10:34,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:10:34,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:10:34,139 INFO L87 Difference]: Start difference. First operand 7646 states and 11154 transitions. Second operand 7 states. [2018-11-07 20:10:36,201 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:10:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:53,075 INFO L93 Difference]: Finished difference Result 15478 states and 22521 transitions. [2018-11-07 20:10:53,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:10:53,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2018-11-07 20:10:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:53,129 INFO L225 Difference]: With dead ends: 15478 [2018-11-07 20:10:53,129 INFO L226 Difference]: Without dead ends: 7838 [2018-11-07 20:10:53,165 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:10:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2018-11-07 20:10:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2018-11-07 20:10:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2018-11-07 20:10:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11355 transitions. [2018-11-07 20:10:53,463 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11355 transitions. Word has length 183 [2018-11-07 20:10:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:10:53,463 INFO L480 AbstractCegarLoop]: Abstraction has 7836 states and 11355 transitions. [2018-11-07 20:10:53,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:10:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11355 transitions. [2018-11-07 20:10:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 20:10:53,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:10:53,473 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:10:53,473 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:10:53,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -386225441, now seen corresponding path program 1 times [2018-11-07 20:10:53,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:10:53,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:53,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:53,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:10:53,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:10:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:54,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:10:54,074 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:10:54,075 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 20:10:54,076 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:10:54,088 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:10:54,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:10:54,223 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:10:55,213 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:10:55,213 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:10:55,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:10:55,246 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:10:55,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:10:55,246 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:10:55,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:10:55,261 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:10:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:10:55,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:10:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:55,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:10:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:10:56,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:10:56,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 20:10:56,115 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:10:56,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:10:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:10:56,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:10:56,117 INFO L87 Difference]: Start difference. First operand 7836 states and 11355 transitions. Second operand 9 states. [2018-11-07 20:11:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:11:07,086 INFO L93 Difference]: Finished difference Result 21948 states and 42313 transitions. [2018-11-07 20:11:07,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:11:07,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2018-11-07 20:11:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:11:07,228 INFO L225 Difference]: With dead ends: 21948 [2018-11-07 20:11:07,228 INFO L226 Difference]: Without dead ends: 14308 [2018-11-07 20:11:07,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 483 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:11:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14308 states. [2018-11-07 20:11:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14308 to 14149. [2018-11-07 20:11:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14149 states. [2018-11-07 20:11:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14149 states to 14149 states and 24757 transitions. [2018-11-07 20:11:08,252 INFO L78 Accepts]: Start accepts. Automaton has 14149 states and 24757 transitions. Word has length 240 [2018-11-07 20:11:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:11:08,252 INFO L480 AbstractCegarLoop]: Abstraction has 14149 states and 24757 transitions. [2018-11-07 20:11:08,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:11:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 14149 states and 24757 transitions. [2018-11-07 20:11:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-07 20:11:08,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:11:08,263 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:11:08,264 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:11:08,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1046651030, now seen corresponding path program 1 times [2018-11-07 20:11:08,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:11:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:08,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:08,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:11:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:08,750 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 20:11:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 20:11:09,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:11:09,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:11:09,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-11-07 20:11:09,552 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:11:09,559 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:11:09,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:11:09,660 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:11:10,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:11:10,117 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:11:10,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:10,156 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:11:10,623 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 73.28% of their original sizes. [2018-11-07 20:11:10,624 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:11:11,557 INFO L415 sIntCurrentIteration]: We unified 257 AI predicates to 257 [2018-11-07 20:11:11,557 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:11:11,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:11:11,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-07 20:11:11,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:11:11,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:11:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:11:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:11:11,559 INFO L87 Difference]: Start difference. First operand 14149 states and 24757 transitions. Second operand 11 states. [2018-11-07 20:11:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:11:29,507 INFO L93 Difference]: Finished difference Result 29070 states and 50543 transitions. [2018-11-07 20:11:29,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:11:29,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2018-11-07 20:11:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:11:29,608 INFO L225 Difference]: With dead ends: 29070 [2018-11-07 20:11:29,609 INFO L226 Difference]: Without dead ends: 15117 [2018-11-07 20:11:29,694 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 267 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:11:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2018-11-07 20:11:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 15112. [2018-11-07 20:11:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15112 states. [2018-11-07 20:11:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15112 states to 15112 states and 25874 transitions. [2018-11-07 20:11:31,413 INFO L78 Accepts]: Start accepts. Automaton has 15112 states and 25874 transitions. Word has length 258 [2018-11-07 20:11:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:11:31,414 INFO L480 AbstractCegarLoop]: Abstraction has 15112 states and 25874 transitions. [2018-11-07 20:11:31,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:11:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 15112 states and 25874 transitions. [2018-11-07 20:11:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-07 20:11:31,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:11:31,426 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:11:31,427 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:11:31,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1681288795, now seen corresponding path program 1 times [2018-11-07 20:11:31,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:11:31,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:31,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:31,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:31,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:11:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 20:11:32,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:11:32,646 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:11:32,647 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-11-07 20:11:32,647 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:11:32,660 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:11:32,660 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:11:32,789 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:11:33,482 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:11:33,482 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:11:33,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:33,490 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:11:33,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:11:33,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:11:33,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:33,501 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:11:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:33,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:11:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:11:33,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:11:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:11:33,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:11:33,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 20:11:33,977 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:11:33,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:11:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:11:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 20:11:33,979 INFO L87 Difference]: Start difference. First operand 15112 states and 25874 transitions. Second operand 11 states. [2018-11-07 20:11:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:11:39,842 INFO L93 Difference]: Finished difference Result 39534 states and 82150 transitions. [2018-11-07 20:11:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 20:11:39,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2018-11-07 20:11:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:11:40,094 INFO L225 Difference]: With dead ends: 39534 [2018-11-07 20:11:40,094 INFO L226 Difference]: Without dead ends: 25421 [2018-11-07 20:11:40,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 518 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:11:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25421 states. [2018-11-07 20:11:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25421 to 25375. [2018-11-07 20:11:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25375 states. [2018-11-07 20:11:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25375 states to 25375 states and 41020 transitions. [2018-11-07 20:11:42,037 INFO L78 Accepts]: Start accepts. Automaton has 25375 states and 41020 transitions. Word has length 258 [2018-11-07 20:11:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:11:42,037 INFO L480 AbstractCegarLoop]: Abstraction has 25375 states and 41020 transitions. [2018-11-07 20:11:42,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:11:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 25375 states and 41020 transitions. [2018-11-07 20:11:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-07 20:11:42,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:11:42,047 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:11:42,047 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:11:42,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash 48645367, now seen corresponding path program 1 times [2018-11-07 20:11:42,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:11:42,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:42,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:42,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:42,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:11:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-07 20:11:42,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:11:42,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:11:42,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:11:42,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:11:42,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:11:42,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:11:42,274 INFO L87 Difference]: Start difference. First operand 25375 states and 41020 transitions. Second operand 3 states. [2018-11-07 20:11:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:11:44,331 INFO L93 Difference]: Finished difference Result 56632 states and 93683 transitions. [2018-11-07 20:11:44,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:11:44,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-11-07 20:11:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:11:44,582 INFO L225 Difference]: With dead ends: 56632 [2018-11-07 20:11:44,582 INFO L226 Difference]: Without dead ends: 31847 [2018-11-07 20:11:44,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:11:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31847 states. [2018-11-07 20:11:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31847 to 31847. [2018-11-07 20:11:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31847 states. [2018-11-07 20:11:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31847 states to 31847 states and 49790 transitions. [2018-11-07 20:11:45,862 INFO L78 Accepts]: Start accepts. Automaton has 31847 states and 49790 transitions. Word has length 260 [2018-11-07 20:11:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:11:45,863 INFO L480 AbstractCegarLoop]: Abstraction has 31847 states and 49790 transitions. [2018-11-07 20:11:45,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:11:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31847 states and 49790 transitions. [2018-11-07 20:11:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-07 20:11:45,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:11:45,874 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:11:45,874 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:11:45,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1408350140, now seen corresponding path program 1 times [2018-11-07 20:11:45,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:11:45,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:45,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:45,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:11:45,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:11:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:11:46,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:11:46,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:11:46,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-07 20:11:46,390 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:11:46,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:11:46,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:11:46,457 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:11:47,559 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:11:47,559 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:11:47,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:11:47,565 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:11:47,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:11:47,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:11:47,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:11:47,575 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:11:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:11:47,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:11:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:11:48,218 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:11:48,412 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-07 20:11:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 59 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:11:49,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:11:49,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-11-07 20:11:49,038 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:11:49,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:11:49,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:11:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:11:49,040 INFO L87 Difference]: Start difference. First operand 31847 states and 49790 transitions. Second operand 16 states. [2018-11-07 20:12:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:12:01,606 INFO L93 Difference]: Finished difference Result 78682 states and 163669 transitions. [2018-11-07 20:12:01,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-07 20:12:01,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 263 [2018-11-07 20:12:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:12:02,350 INFO L225 Difference]: With dead ends: 78682 [2018-11-07 20:12:02,351 INFO L226 Difference]: Without dead ends: 47242 [2018-11-07 20:12:02,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 517 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=909, Invalid=3381, Unknown=0, NotChecked=0, Total=4290 [2018-11-07 20:12:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47242 states. [2018-11-07 20:12:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47242 to 42634. [2018-11-07 20:12:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42634 states. [2018-11-07 20:12:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42634 states to 42634 states and 73121 transitions. [2018-11-07 20:12:06,170 INFO L78 Accepts]: Start accepts. Automaton has 42634 states and 73121 transitions. Word has length 263 [2018-11-07 20:12:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:12:06,171 INFO L480 AbstractCegarLoop]: Abstraction has 42634 states and 73121 transitions. [2018-11-07 20:12:06,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:12:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 42634 states and 73121 transitions. [2018-11-07 20:12:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-07 20:12:06,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:12:06,184 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:12:06,184 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:12:06,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:12:06,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1156530911, now seen corresponding path program 1 times [2018-11-07 20:12:06,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:12:06,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:12:06,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:12:06,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:12:06,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:12:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:12:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 63 proven. 97 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 20:12:06,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:12:06,875 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:12:06,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 273 with the following transitions: [2018-11-07 20:12:06,876 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [637], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:12:06,879 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:12:06,879 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:12:07,075 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:12:07,429 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:12:07,429 INFO L272 AbstractInterpreter]: Visited 141 different actions 419 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:12:07,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:12:07,441 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:12:07,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:12:07,441 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:12:07,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:12:07,450 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:12:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:12:07,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:12:12,325 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-11-07 20:12:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 20:12:12,451 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:12:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:12:13,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:12:13,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 12 [2018-11-07 20:12:13,162 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:12:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:12:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:12:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=89, Unknown=2, NotChecked=0, Total=132 [2018-11-07 20:12:13,163 INFO L87 Difference]: Start difference. First operand 42634 states and 73121 transitions. Second operand 10 states. [2018-11-07 20:12:19,734 WARN L179 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-11-07 20:12:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:12:53,867 INFO L93 Difference]: Finished difference Result 119319 states and 279147 transitions. [2018-11-07 20:12:53,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:12:53,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 272 [2018-11-07 20:12:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:12:54,971 INFO L225 Difference]: With dead ends: 119319 [2018-11-07 20:12:54,972 INFO L226 Difference]: Without dead ends: 77071 [2018-11-07 20:12:56,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 540 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=275, Invalid=714, Unknown=3, NotChecked=0, Total=992 [2018-11-07 20:12:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77071 states. [2018-11-07 20:12:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77071 to 75798. [2018-11-07 20:12:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75798 states. [2018-11-07 20:13:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75798 states to 75798 states and 159767 transitions. [2018-11-07 20:13:01,388 INFO L78 Accepts]: Start accepts. Automaton has 75798 states and 159767 transitions. Word has length 272 [2018-11-07 20:13:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:01,389 INFO L480 AbstractCegarLoop]: Abstraction has 75798 states and 159767 transitions. [2018-11-07 20:13:01,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:13:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 75798 states and 159767 transitions. [2018-11-07 20:13:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-07 20:13:01,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:01,398 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:13:01,399 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:01,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:01,399 INFO L82 PathProgramCache]: Analyzing trace with hash 290792217, now seen corresponding path program 1 times [2018-11-07 20:13:01,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:01,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:01,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:01,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:01,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:02,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:13:02,378 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:13:02,378 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-11-07 20:13:02,379 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:13:02,381 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:13:02,381 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:13:02,431 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:13:02,968 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:13:02,968 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:13:02,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:02,975 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:13:03,735 INFO L227 lantSequenceWeakener]: Weakened 65 states. On average, predicates are now at 74.64% of their original sizes. [2018-11-07 20:13:03,735 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:13:08,210 INFO L415 sIntCurrentIteration]: We unified 278 AI predicates to 278 [2018-11-07 20:13:08,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:13:08,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:13:08,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-07 20:13:08,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:08,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:13:08,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:13:08,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:13:08,212 INFO L87 Difference]: Start difference. First operand 75798 states and 159767 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 20:13:36,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:13:36,253 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:13:36,258 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:13:36,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:13:36 BoogieIcfgContainer [2018-11-07 20:13:36,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:13:36,260 INFO L168 Benchmark]: Toolchain (without parser) took 208025.08 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:13:36,261 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-11-07 20:13:36,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 999.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:13:36,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:13:36,263 INFO L168 Benchmark]: Boogie Preprocessor took 118.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:13:36,264 INFO L168 Benchmark]: RCFGBuilder took 4629.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 186.9 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:13:36,265 INFO L168 Benchmark]: TraceAbstraction took 202120.10 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:13:36,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 999.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 152.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4629.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 186.9 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202120.10 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 93). Cancelled while BasicCegarLoop was constructing difference of abstraction (75798states) and FLOYD_HOARE automaton (currently 30 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (33257 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 202.0s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 157.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2960 SDtfs, 16320 SDslu, 4040 SDs, 0 SdLazy, 31583 SolverSat, 5712 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 84.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2985 GetRequests, 2758 SyntacticMatches, 14 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75798occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.5s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9976164733556643 AbsIntWeakeningRatio, 0.11715481171548117 AbsIntAvgWeakeningVarsNumRemoved, 18.697350069735005 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 6935 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 3436 NumberOfCodeBlocks, 3436 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4449 ConstructedInterpolants, 3 QuantifiedInterpolants, 6487907 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1872 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 1937/2452 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown