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/Problem15_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:05:07,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:05:07,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:05:07,347 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:05:07,347 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:05:07,348 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:05:07,349 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:05:07,351 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:05:07,353 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:05:07,354 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:05:07,355 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:05:07,355 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:05:07,356 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:05:07,357 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:05:07,358 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:05:07,359 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:05:07,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:05:07,362 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:05:07,364 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:05:07,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:05:07,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:05:07,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:05:07,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:05:07,378 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:05:07,378 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:05:07,379 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:05:07,380 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:05:07,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:05:07,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:05:07,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:05:07,387 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:05:07,388 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:05:07,388 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:05:07,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:05:07,391 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:05:07,392 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:05:07,392 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 18:05:07,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:05:07,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:05:07,422 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:05:07,422 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:05:07,422 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:05:07,422 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:05:07,422 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:05:07,423 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:05:07,423 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:05:07,423 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:05:07,423 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:05:07,423 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:05:07,424 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:05:07,425 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:05:07,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:05:07,425 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:05:07,425 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:05:07,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:05:07,426 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:05:07,426 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:05:07,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:05:07,426 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:05:07,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:05:07,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:05:07,428 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:05:07,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:05:07,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:05:07,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:05:07,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:05:07,429 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:05:07,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:05:07,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:05:07,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:05:07,430 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:05:07,430 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:05:07,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:05:07,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:05:07,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:05:07,504 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:05:07,504 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:05:07,505 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-11-07 18:05:07,577 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61896890/19f8be9637a14b7a97edbb984cc91029/FLAG07abd34ea [2018-11-07 18:05:08,293 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:05:08,294 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-11-07 18:05:08,317 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61896890/19f8be9637a14b7a97edbb984cc91029/FLAG07abd34ea [2018-11-07 18:05:08,333 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61896890/19f8be9637a14b7a97edbb984cc91029 [2018-11-07 18:05:08,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:05:08,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:05:08,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:05:08,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:05:08,351 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:05:08,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:05:08" (1/1) ... [2018-11-07 18:05:08,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:08, skipping insertion in model container [2018-11-07 18:05:08,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:05:08" (1/1) ... [2018-11-07 18:05:08,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:05:08,453 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:05:09,181 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:05:09,186 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:05:09,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:05:09,556 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:05:09,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09 WrapperNode [2018-11-07 18:05:09,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:05:09,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:05:09,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:05:09,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:05:09,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:05:09,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:05:09,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:05:09,790 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:05:09,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:05:09,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:05:09,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:05:09,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:05:09,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (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 18:05:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:05:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:05:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:05:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:05:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:05:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:05:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:05:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:05:15,614 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:05:15,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:05:15 BoogieIcfgContainer [2018-11-07 18:05:15,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:05:15,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:05:15,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:05:15,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:05:15,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:05:08" (1/3) ... [2018-11-07 18:05:15,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:05:15, skipping insertion in model container [2018-11-07 18:05:15,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09" (2/3) ... [2018-11-07 18:05:15,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:05:15, skipping insertion in model container [2018-11-07 18:05:15,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:05:15" (3/3) ... [2018-11-07 18:05:15,625 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label03_false-unreach-call.c [2018-11-07 18:05:15,633 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:05:15,642 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:05:15,657 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:05:15,699 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:05:15,699 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:05:15,699 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:05:15,699 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:05:15,700 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:05:15,700 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:05:15,700 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:05:15,700 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:05:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 18:05:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 18:05:15,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:15,744 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] [2018-11-07 18:05:15,747 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:15,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:15,756 INFO L82 PathProgramCache]: Analyzing trace with hash 569679620, now seen corresponding path program 1 times [2018-11-07 18:05:15,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:15,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:15,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:15,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:15,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:16,211 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 18:05:16,229 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 18:05:16,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:16,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:05:16,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:16,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:05:16,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:05:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:16,262 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 18:05:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:22,104 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 18:05:22,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:22,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-07 18:05:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:22,132 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 18:05:22,133 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 18:05:22,146 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 18:05:22,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 18:05:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 18:05:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 18:05:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 18:05:22,258 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 30 [2018-11-07 18:05:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:22,259 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 18:05:22,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 18:05:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 18:05:22,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:22,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:22,266 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:22,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:22,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1416535921, now seen corresponding path program 1 times [2018-11-07 18:05:22,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:22,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:22,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:22,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:22,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:05:22,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:22,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:05:22,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:22,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:05:22,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:05:22,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:22,527 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 18:05:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:27,525 INFO L93 Difference]: Finished difference Result 2760 states and 5146 transitions. [2018-11-07 18:05:27,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:27,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-11-07 18:05:27,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:27,546 INFO L225 Difference]: With dead ends: 2760 [2018-11-07 18:05:27,546 INFO L226 Difference]: Without dead ends: 2007 [2018-11-07 18:05:27,555 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 18:05:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2018-11-07 18:05:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2002. [2018-11-07 18:05:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2018-11-07 18:05:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3249 transitions. [2018-11-07 18:05:27,658 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3249 transitions. Word has length 100 [2018-11-07 18:05:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:27,659 INFO L480 AbstractCegarLoop]: Abstraction has 2002 states and 3249 transitions. [2018-11-07 18:05:27,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3249 transitions. [2018-11-07 18:05:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 18:05:27,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:27,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:27,681 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:27,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1314802227, now seen corresponding path program 1 times [2018-11-07 18:05:27,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:27,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:27,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:05:28,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:28,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:05:28,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:28,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:05:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:05:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:05:28,214 INFO L87 Difference]: Start difference. First operand 2002 states and 3249 transitions. Second operand 5 states. [2018-11-07 18:05:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:36,712 INFO L93 Difference]: Finished difference Result 6848 states and 11358 transitions. [2018-11-07 18:05:36,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:05:36,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2018-11-07 18:05:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:36,747 INFO L225 Difference]: With dead ends: 6848 [2018-11-07 18:05:36,747 INFO L226 Difference]: Without dead ends: 4852 [2018-11-07 18:05:36,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:05:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2018-11-07 18:05:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4806. [2018-11-07 18:05:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2018-11-07 18:05:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7207 transitions. [2018-11-07 18:05:36,942 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7207 transitions. Word has length 181 [2018-11-07 18:05:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:36,943 INFO L480 AbstractCegarLoop]: Abstraction has 4806 states and 7207 transitions. [2018-11-07 18:05:36,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:05:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7207 transitions. [2018-11-07 18:05:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 18:05:36,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:36,960 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:05:36,960 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:36,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2121552729, now seen corresponding path program 1 times [2018-11-07 18:05:36,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:36,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:36,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:36,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:36,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 46 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:05:37,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:37,243 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:37,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-07 18:05:37,246 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:05:37,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:37,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:37,812 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:37,838 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:37,840 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:05:37,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:37,874 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:38,394 INFO L227 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 18:05:38,394 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:05:38,512 INFO L415 sIntCurrentIteration]: We unified 204 AI predicates to 204 [2018-11-07 18:05:38,512 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:05:38,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:05:38,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:05:38,513 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:38,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:05:38,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:05:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:05:38,515 INFO L87 Difference]: Start difference. First operand 4806 states and 7207 transitions. Second operand 7 states. [2018-11-07 18:05:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:55,797 INFO L93 Difference]: Finished difference Result 9916 states and 14775 transitions. [2018-11-07 18:05:55,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:05:55,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-11-07 18:05:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:55,823 INFO L225 Difference]: With dead ends: 9916 [2018-11-07 18:05:55,823 INFO L226 Difference]: Without dead ends: 5116 [2018-11-07 18:05:55,846 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:05:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2018-11-07 18:05:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2018-11-07 18:05:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5114 states. [2018-11-07 18:05:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7524 transitions. [2018-11-07 18:05:55,976 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7524 transitions. Word has length 205 [2018-11-07 18:05:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:55,976 INFO L480 AbstractCegarLoop]: Abstraction has 5114 states and 7524 transitions. [2018-11-07 18:05:55,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:05:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7524 transitions. [2018-11-07 18:05:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 18:05:55,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:55,990 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:05:55,993 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:55,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1101083330, now seen corresponding path program 1 times [2018-11-07 18:05:55,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:55,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:55,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:55,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:55,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 75 proven. 242 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 18:05:56,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:56,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:56,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-11-07 18:05:56,715 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:05:56,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:56,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:56,825 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:57,489 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:57,490 INFO L272 AbstractInterpreter]: Visited 105 different actions 599 times. Merged at 5 different actions 24 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:05:57,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:57,501 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:58,562 INFO L227 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 78.17% of their original sizes. [2018-11-07 18:05:58,563 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:06:00,765 INFO L415 sIntCurrentIteration]: We unified 300 AI predicates to 300 [2018-11-07 18:06:00,766 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:06:00,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:06:00,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 18:06:00,767 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:06:00,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:06:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:06:00,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:06:00,768 INFO L87 Difference]: Start difference. First operand 5114 states and 7524 transitions. Second operand 18 states. [2018-11-07 18:06:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:06:51,397 INFO L93 Difference]: Finished difference Result 12687 states and 17963 transitions. [2018-11-07 18:06:51,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:06:51,397 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 301 [2018-11-07 18:06:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:06:51,426 INFO L225 Difference]: With dead ends: 12687 [2018-11-07 18:06:51,426 INFO L226 Difference]: Without dead ends: 7887 [2018-11-07 18:06:51,447 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 311 GetRequests, 230 SyntacticMatches, 54 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2018-11-07 18:06:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7887 states. [2018-11-07 18:06:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7887 to 6717. [2018-11-07 18:06:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6717 states. [2018-11-07 18:06:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9202 transitions. [2018-11-07 18:06:51,610 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9202 transitions. Word has length 301 [2018-11-07 18:06:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:06:51,611 INFO L480 AbstractCegarLoop]: Abstraction has 6717 states and 9202 transitions. [2018-11-07 18:06:51,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:06:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9202 transitions. [2018-11-07 18:06:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-07 18:06:51,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:06:51,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:51,619 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:06:51,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1790871666, now seen corresponding path program 1 times [2018-11-07 18:06:51,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:06:51,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:51,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:51,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:51,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:06:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 18:06:52,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:52,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:06:52,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-11-07 18:06:52,194 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:06:52,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:06:52,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:06:52,581 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:06:52,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:06:52,794 INFO L272 AbstractInterpreter]: Visited 282 different actions 560 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:06:52,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:52,817 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:06:53,187 INFO L227 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 80.14% of their original sizes. [2018-11-07 18:06:53,188 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:06:53,505 INFO L415 sIntCurrentIteration]: We unified 304 AI predicates to 304 [2018-11-07 18:06:53,506 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:06:53,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:06:53,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [5] total 21 [2018-11-07 18:06:53,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:06:53,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:06:53,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:06:53,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:06:53,508 INFO L87 Difference]: Start difference. First operand 6717 states and 9202 transitions. Second operand 18 states. [2018-11-07 18:07:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:32,913 INFO L93 Difference]: Finished difference Result 12439 states and 18290 transitions. [2018-11-07 18:07:32,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:07:32,913 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 305 [2018-11-07 18:07:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:32,938 INFO L225 Difference]: With dead ends: 12439 [2018-11-07 18:07:32,938 INFO L226 Difference]: Without dead ends: 7639 [2018-11-07 18:07:32,962 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 325 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:07:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2018-11-07 18:07:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7632. [2018-11-07 18:07:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7632 states. [2018-11-07 18:07:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 10188 transitions. [2018-11-07 18:07:33,146 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 10188 transitions. Word has length 305 [2018-11-07 18:07:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:33,147 INFO L480 AbstractCegarLoop]: Abstraction has 7632 states and 10188 transitions. [2018-11-07 18:07:33,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:07:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 10188 transitions. [2018-11-07 18:07:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-11-07 18:07:33,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:33,161 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:33,161 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:33,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:33,162 INFO L82 PathProgramCache]: Analyzing trace with hash -785698423, now seen corresponding path program 1 times [2018-11-07 18:07:33,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:33,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:33,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 18:07:33,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:07:33,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:07:33,618 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:07:33,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:07:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:07:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:07:33,619 INFO L87 Difference]: Start difference. First operand 7632 states and 10188 transitions. Second operand 4 states. [2018-11-07 18:07:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:37,763 INFO L93 Difference]: Finished difference Result 21745 states and 31805 transitions. [2018-11-07 18:07:37,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:07:37,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 401 [2018-11-07 18:07:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:37,827 INFO L225 Difference]: With dead ends: 21745 [2018-11-07 18:07:37,827 INFO L226 Difference]: Without dead ends: 16320 [2018-11-07 18:07:37,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:07:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16320 states. [2018-11-07 18:07:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16320 to 15701. [2018-11-07 18:07:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15701 states. [2018-11-07 18:07:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15701 states to 15701 states and 20840 transitions. [2018-11-07 18:07:38,191 INFO L78 Accepts]: Start accepts. Automaton has 15701 states and 20840 transitions. Word has length 401 [2018-11-07 18:07:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:38,192 INFO L480 AbstractCegarLoop]: Abstraction has 15701 states and 20840 transitions. [2018-11-07 18:07:38,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:07:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15701 states and 20840 transitions. [2018-11-07 18:07:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-07 18:07:38,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:38,227 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:38,227 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:38,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -529689598, now seen corresponding path program 1 times [2018-11-07 18:07:38,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:38,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:38,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:38,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:38,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 75 proven. 176 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 18:07:38,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:38,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:38,902 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-07 18:07:38,902 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:07:38,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:38,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:38,956 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:40,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:07:40,214 INFO L272 AbstractInterpreter]: Visited 247 different actions 728 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:07:40,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:40,222 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:07:40,682 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-07 18:07:40,682 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:07:41,252 INFO L415 sIntCurrentIteration]: We unified 451 AI predicates to 451 [2018-11-07 18:07:41,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:07:41,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:07:41,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [5] total 22 [2018-11-07 18:07:41,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:07:41,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:07:41,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:07:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:07:41,255 INFO L87 Difference]: Start difference. First operand 15701 states and 20840 transitions. Second operand 19 states. [2018-11-07 18:08:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:22,599 INFO L93 Difference]: Finished difference Result 29478 states and 39930 transitions. [2018-11-07 18:08:22,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:08:22,599 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 452 [2018-11-07 18:08:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:22,661 INFO L225 Difference]: With dead ends: 29478 [2018-11-07 18:08:22,662 INFO L226 Difference]: Without dead ends: 18278 [2018-11-07 18:08:22,699 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 465 GetRequests, 432 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2018-11-07 18:08:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18278 states. [2018-11-07 18:08:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18278 to 18040. [2018-11-07 18:08:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18040 states. [2018-11-07 18:08:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18040 states to 18040 states and 23279 transitions. [2018-11-07 18:08:23,060 INFO L78 Accepts]: Start accepts. Automaton has 18040 states and 23279 transitions. Word has length 452 [2018-11-07 18:08:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:23,061 INFO L480 AbstractCegarLoop]: Abstraction has 18040 states and 23279 transitions. [2018-11-07 18:08:23,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 18:08:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 18040 states and 23279 transitions. [2018-11-07 18:08:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-11-07 18:08:23,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:23,098 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:23,098 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:23,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:23,099 INFO L82 PathProgramCache]: Analyzing trace with hash -492806077, now seen corresponding path program 1 times [2018-11-07 18:08:23,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:23,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:23,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:23,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:23,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 18:08:24,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:24,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:24,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 502 with the following transitions: [2018-11-07 18:08:24,724 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:08:24,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:24,730 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:24,809 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:08:25,948 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:08:25,948 INFO L272 AbstractInterpreter]: Visited 285 different actions 1128 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:08:25,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:25,955 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:08:25,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:25,956 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 18:08:25,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:25,967 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:08:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:26,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:08:26,729 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 18:08:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 246 proven. 41 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:08:27,663 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:08:27,785 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-11-07 18:08:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 79 proven. 277 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:08:35,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:08:35,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2018-11-07 18:08:35,988 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:08:35,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:08:35,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:08:35,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:08:35,991 INFO L87 Difference]: Start difference. First operand 18040 states and 23279 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 18:08:41,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 18:08:41,473 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:08:41,479 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:08:41,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:08:41 BoogieIcfgContainer [2018-11-07 18:08:41,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:08:41,481 INFO L168 Benchmark]: Toolchain (without parser) took 213135.94 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,482 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 18:08:41,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1210.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,484 INFO L168 Benchmark]: Boogie Preprocessor took 169.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,485 INFO L168 Benchmark]: RCFGBuilder took 5655.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.4 MB). Peak memory consumption was 295.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,485 INFO L168 Benchmark]: TraceAbstraction took 205864.24 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:08:41,491 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 1210.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 231.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5655.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.4 MB). Peak memory consumption was 295.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205864.24 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (18040states) and FLOYD_HOARE automaton (currently 16 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (4429 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 205.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2824 SDtfs, 22226 SDslu, 2502 SDs, 0 SdLazy, 31904 SolverSat, 3323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2359 GetRequests, 2161 SyntacticMatches, 58 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18040occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.5s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9975737254301844 AbsIntWeakeningRatio, 0.08737092930897537 AbsIntAvgWeakeningVarsNumRemoved, 14.433677521842732 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 2442 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 2977 NumberOfCodeBlocks, 2977 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3467 ConstructedInterpolants, 0 QuantifiedInterpolants, 7554525 SizeOfPredicates, 7 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1253/2089 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown