java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:54:09,505 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:54:09,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:54:09,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:54:09,519 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:54:09,520 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:54:09,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:54:09,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:54:09,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:54:09,526 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:54:09,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:54:09,527 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:54:09,528 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:54:09,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:54:09,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:54:09,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:54:09,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:54:09,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:54:09,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:54:09,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:54:09,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:54:09,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:54:09,542 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:54:09,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:54:09,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:54:09,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:54:09,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:54:09,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:54:09,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:54:09,547 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:54:09,548 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:54:09,548 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:54:09,549 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:54:09,549 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:54:09,550 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:54:09,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:54:09,551 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:54:09,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:54:09,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:54:09,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:54:09,568 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:54:09,568 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:54:09,568 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:54:09,568 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:54:09,569 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:54:09,569 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:54:09,569 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:54:09,569 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:54:09,569 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:54:09,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:54:09,570 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:54:09,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:54:09,571 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:54:09,571 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:54:09,571 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:54:09,571 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:54:09,571 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:54:09,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:54:09,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:54:09,572 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:54:09,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:54:09,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:54:09,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:54:09,573 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:54:09,573 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:54:09,573 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:54:09,573 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:54:09,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:54:09,574 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:54:09,574 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:54:09,574 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:54:09,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:54:09,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:54:09,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:54:09,637 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:54:09,637 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:54:09,638 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-26 23:54:09,694 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8bf6ec3b/bc4c52a04d5e41fea7635887ca44d96b/FLAGd320a63e3 [2018-10-26 23:54:10,251 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:54:10,252 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-26 23:54:10,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8bf6ec3b/bc4c52a04d5e41fea7635887ca44d96b/FLAGd320a63e3 [2018-10-26 23:54:10,282 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8bf6ec3b/bc4c52a04d5e41fea7635887ca44d96b [2018-10-26 23:54:10,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:54:10,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:54:10,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:54:10,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:54:10,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:54:10,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:10" (1/1) ... [2018-10-26 23:54:10,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:10, skipping insertion in model container [2018-10-26 23:54:10,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:10" (1/1) ... [2018-10-26 23:54:10,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:54:10,384 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:54:10,887 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:54:10,892 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:54:11,049 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:54:11,075 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:54:11,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11 WrapperNode [2018-10-26 23:54:11,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:54:11,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:54:11,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:54:11,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:54:11,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:54:11,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:54:11,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:54:11,301 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:54:11,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... [2018-10-26 23:54:11,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:54:11,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:54:11,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:54:11,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:54:11,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 23:54:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:54:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:54:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:54:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:54:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:54:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:54:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:54:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:54:14,871 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:54:14,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:14 BoogieIcfgContainer [2018-10-26 23:54:14,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:54:14,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:54:14,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:54:14,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:54:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:54:10" (1/3) ... [2018-10-26 23:54:14,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f24f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:14, skipping insertion in model container [2018-10-26 23:54:14,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:11" (2/3) ... [2018-10-26 23:54:14,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f24f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:14, skipping insertion in model container [2018-10-26 23:54:14,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:14" (3/3) ... [2018-10-26 23:54:14,881 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-10-26 23:54:14,891 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:54:14,900 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:54:14,918 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:54:14,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:54:14,959 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:54:14,959 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:54:14,959 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:54:14,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:54:14,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:54:14,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:54:14,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:54:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:54:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 23:54:14,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:14,994 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] [2018-10-26 23:54:14,996 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:15,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-10-26 23:54:15,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:54:15,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:15,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:15,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:15,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:54:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:15,435 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:54:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:15,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:54:15,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:54:15,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:15,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:54:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:54:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:54:15,575 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:54:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:17,566 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-26 23:54:17,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:54:17,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-26 23:54:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:17,590 INFO L225 Difference]: With dead ends: 691 [2018-10-26 23:54:17,590 INFO L226 Difference]: Without dead ends: 434 [2018-10-26 23:54:17,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:54:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-26 23:54:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-26 23:54:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-26 23:54:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-26 23:54:17,678 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-10-26 23:54:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:17,679 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-26 23:54:17,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:54:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-26 23:54:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-26 23:54:17,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:17,687 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] [2018-10-26 23:54:17,687 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:17,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:17,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-10-26 23:54:17,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:54:17,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:17,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:17,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:17,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:54:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:17,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:54:17,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:54:17,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:17,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:54:17,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:54:17,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:54:17,953 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-26 23:54:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:23,990 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-26 23:54:23,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:54:23,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-10-26 23:54:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:24,008 INFO L225 Difference]: With dead ends: 1416 [2018-10-26 23:54:24,009 INFO L226 Difference]: Without dead ends: 988 [2018-10-26 23:54:24,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:54:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-26 23:54:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-26 23:54:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-26 23:54:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-26 23:54:24,066 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-10-26 23:54:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:24,066 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-26 23:54:24,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:54:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-26 23:54:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-26 23:54:24,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:24,079 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] [2018-10-26 23:54:24,079 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:24,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-10-26 23:54:24,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:54:24,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:24,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:24,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:24,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:54:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:24,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:54:24,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:54:24,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:24,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:54:24,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:54:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:54:24,405 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-26 23:54:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:27,365 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-26 23:54:27,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:54:27,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-26 23:54:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:27,385 INFO L225 Difference]: With dead ends: 2353 [2018-10-26 23:54:27,385 INFO L226 Difference]: Without dead ends: 1386 [2018-10-26 23:54:27,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:54:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-26 23:54:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-26 23:54:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-26 23:54:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-26 23:54:27,483 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-10-26 23:54:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:27,484 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-26 23:54:27,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:54:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-26 23:54:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-26 23:54:27,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:27,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:54:27,492 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:27,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:27,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1467266075, now seen corresponding path program 1 times [2018-10-26 23:54:27,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:54:27,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:27,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:27,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:27,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:54:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:27,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:54:27,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:54:27,792 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-26 23:54:27,794 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:54:27,868 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:54:27,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:54:30,007 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:54:30,009 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:54:30,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:30,048 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:54:31,964 INFO L227 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 77.68% of their original sizes. [2018-10-26 23:54:31,964 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:54:32,368 INFO L415 sIntCurrentIteration]: We unified 190 AI predicates to 190 [2018-10-26 23:54:32,368 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:54:32,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:54:32,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-26 23:54:32,370 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:32,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:54:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:54:32,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:54:32,371 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-26 23:54:34,596 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:55:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:55:00,030 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-26 23:55:00,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:55:00,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2018-10-26 23:55:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:55:00,039 INFO L225 Difference]: With dead ends: 2883 [2018-10-26 23:55:00,039 INFO L226 Difference]: Without dead ends: 1537 [2018-10-26 23:55:00,044 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:55:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-26 23:55:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-26 23:55:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-26 23:55:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-26 23:55:00,086 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 191 [2018-10-26 23:55:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:55:00,087 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-26 23:55:00,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:55:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-26 23:55:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-26 23:55:00,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:55:00,093 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:55:00,093 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:55:00,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash -368059732, now seen corresponding path program 1 times [2018-10-26 23:55:00,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:55:00,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:00,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:00,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:55:00,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:55:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:00,559 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:55:00,753 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 23:55:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 156 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:55:01,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:55:01,314 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:55:01,314 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-26 23:55:01,314 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:55:01,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:55:01,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:55:04,129 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:55:04,130 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:55:04,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:55:04,141 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:55:06,710 INFO L227 lantSequenceWeakener]: Weakened 96 states. On average, predicates are now at 78.35% of their original sizes. [2018-10-26 23:55:06,711 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:55:29,014 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-10-26 23:55:29,014 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:55:29,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:55:29,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-26 23:55:29,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:55:29,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:55:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:55:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:55:29,016 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 20 states. [2018-10-26 23:56:43,519 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-26 23:58:17,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 23:58:17,283 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:58:17,289 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:58:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:58:17 BoogieIcfgContainer [2018-10-26 23:58:17,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:58:17,290 INFO L168 Benchmark]: Toolchain (without parser) took 246996.62 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 128.5 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,292 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-26 23:58:17,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.27 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 223.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,297 INFO L168 Benchmark]: Boogie Preprocessor took 116.88 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,298 INFO L168 Benchmark]: RCFGBuilder took 3449.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,301 INFO L168 Benchmark]: TraceAbstraction took 242416.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:58:17,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 780.27 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 223.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.88 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3449.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.9 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242416.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (2964 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 242.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 207.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 714 SDtfs, 4824 SDslu, 946 SDs, 0 SdLazy, 7111 SolverSat, 1120 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 82.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 497 GetRequests, 429 SyntacticMatches, 23 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9947444288608382 AbsIntWeakeningRatio, 0.12473118279569892 AbsIntAvgWeakeningVarsNumRemoved, 539.6064516129032 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 775 NumberOfCodeBlocks, 775 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 328/476 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown