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/Problem01_label20_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:11:46,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:11:46,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:11:46,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:11:46,598 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:11:46,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:11:46,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:11:46,603 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:11:46,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:11:46,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:11:46,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:11:46,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:11:46,610 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:11:46,611 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:11:46,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:11:46,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:11:46,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:11:46,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:11:46,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:11:46,634 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:11:46,635 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:11:46,636 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:11:46,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 21:11:46,643 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 21:11:46,643 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 21:11:46,645 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 21:11:46,646 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 21:11:46,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 21:11:46,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 21:11:46,653 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 21:11:46,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 21:11:46,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 21:11:46,655 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 21:11:46,656 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 21:11:46,659 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 21:11:46,660 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 21:11:46,660 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 [2018-10-23 21:11:46,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:11:46,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:11:46,691 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:11:46,692 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:11:46,693 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:11:46,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:11:46,693 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:11:46,693 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:11:46,694 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:11:46,696 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:11:46,696 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:11:46,696 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:11:46,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:11:46,697 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:11:46,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:11:46,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:11:46,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:11:46,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:11:46,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:11:46,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:11:46,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:11:46,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:11:46,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:11:46,702 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:11:46,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:11:46,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:11:46,703 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:11:46,703 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:11:46,703 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:11:46,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:11:46,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:11:46,704 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:11:46,704 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:11:46,704 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:11:46,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:11:46,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:11:46,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:11:46,802 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:11:46,802 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:11:46,803 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label20_false-unreach-call_false-termination.c [2018-10-23 21:11:46,869 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/485300aae/019d6331c17348db9ce16b6ce9d2fd48/FLAG7896dd933 [2018-10-23 21:11:47,431 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:11:47,432 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label20_false-unreach-call_false-termination.c [2018-10-23 21:11:47,448 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/485300aae/019d6331c17348db9ce16b6ce9d2fd48/FLAG7896dd933 [2018-10-23 21:11:47,468 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/485300aae/019d6331c17348db9ce16b6ce9d2fd48 [2018-10-23 21:11:47,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:11:47,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:11:47,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:47,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:11:47,487 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:11:47,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3e8be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:47, skipping insertion in model container [2018-10-23 21:11:47,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:11:47,583 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:11:48,084 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,091 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:11:48,233 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,255 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:11:48,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48 WrapperNode [2018-10-23 21:11:48,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:48,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:11:48,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:11:48,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:11:48,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:11:48,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:11:48,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:11:48,577 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:11:48,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (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 [2018-10-23 21:11:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:11:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:11:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:11:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:11:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:11:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:11:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:11:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:11:51,773 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:11:51,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:51 BoogieIcfgContainer [2018-10-23 21:11:51,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:11:51,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:11:51,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:11:51,778 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:11:51,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:47" (1/3) ... [2018-10-23 21:11:51,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aff83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:51, skipping insertion in model container [2018-10-23 21:11:51,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (2/3) ... [2018-10-23 21:11:51,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aff83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:51, skipping insertion in model container [2018-10-23 21:11:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:51" (3/3) ... [2018-10-23 21:11:51,783 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label20_false-unreach-call_false-termination.c [2018-10-23 21:11:51,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:11:51,800 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:11:51,819 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:11:51,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:11:51,860 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:11:51,860 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:11:51,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:11:51,861 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:11:51,861 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:11:51,861 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:11:51,862 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:11:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 21:11:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-23 21:11:51,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:51,902 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:11:51,905 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:51,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1836367149, now seen corresponding path program 1 times [2018-10-23 21:11:51,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:51,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:51,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:51,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:51,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:52,469 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:11:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:52,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:52,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:11:52,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:52,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:11:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:11:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:52,619 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 21:11:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:54,349 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 21:11:54,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:11:54,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-10-23 21:11:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:54,370 INFO L225 Difference]: With dead ends: 550 [2018-10-23 21:11:54,370 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 21:11:54,377 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 [2018-10-23 21:11:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 21:11:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 21:11:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 21:11:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-23 21:11:54,459 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 79 [2018-10-23 21:11:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:54,460 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-23 21:11:54,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:11:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-23 21:11:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-23 21:11:54,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:54,467 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:54,467 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:54,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1539527022, now seen corresponding path program 1 times [2018-10-23 21:11:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:54,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:54,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:54,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:54,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:54,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:54,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:11:54,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:54,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:11:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:11:54,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:11:54,710 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-23 21:11:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:56,557 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-23 21:11:56,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:11:56,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-10-23 21:11:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:56,566 INFO L225 Difference]: With dead ends: 888 [2018-10-23 21:11:56,567 INFO L226 Difference]: Without dead ends: 554 [2018-10-23 21:11:56,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 21:11:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-23 21:11:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-23 21:11:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-23 21:11:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-23 21:11:56,613 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 90 [2018-10-23 21:11:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:56,614 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-23 21:11:56,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:11:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-23 21:11:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-23 21:11:56,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:56,619 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:56,620 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:56,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:56,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1217877146, now seen corresponding path program 1 times [2018-10-23 21:11:56,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:56,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:56,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:56,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:56,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:56,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:56,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:11:56,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:56,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:11:56,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:11:56,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:56,834 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-10-23 21:11:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:58,211 INFO L93 Difference]: Finished difference Result 1530 states and 2434 transitions. [2018-10-23 21:11:58,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:11:58,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-10-23 21:11:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:58,224 INFO L225 Difference]: With dead ends: 1530 [2018-10-23 21:11:58,224 INFO L226 Difference]: Without dead ends: 997 [2018-10-23 21:11:58,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2018-10-23 21:11:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2018-10-23 21:11:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2018-10-23 21:11:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1433 transitions. [2018-10-23 21:11:58,280 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1433 transitions. Word has length 91 [2018-10-23 21:11:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:58,281 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1433 transitions. [2018-10-23 21:11:58,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:11:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1433 transitions. [2018-10-23 21:11:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-23 21:11:58,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:58,286 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:58,286 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:58,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1260901286, now seen corresponding path program 1 times [2018-10-23 21:11:58,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:58,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:58,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:58,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:58,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:58,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:58,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:11:58,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:58,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:11:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:11:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:11:58,495 INFO L87 Difference]: Start difference. First operand 997 states and 1433 transitions. Second operand 3 states. [2018-10-23 21:12:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:01,301 INFO L93 Difference]: Finished difference Result 2877 states and 4284 transitions. [2018-10-23 21:12:01,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:12:01,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-10-23 21:12:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:01,320 INFO L225 Difference]: With dead ends: 2877 [2018-10-23 21:12:01,320 INFO L226 Difference]: Without dead ends: 1886 [2018-10-23 21:12:01,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:12:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2018-10-23 21:12:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2018-10-23 21:12:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2018-10-23 21:12:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2689 transitions. [2018-10-23 21:12:01,411 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2689 transitions. Word has length 97 [2018-10-23 21:12:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:01,412 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2689 transitions. [2018-10-23 21:12:01,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:12:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2689 transitions. [2018-10-23 21:12:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 21:12:01,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:01,418 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] [2018-10-23 21:12:01,419 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:01,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1827829834, now seen corresponding path program 1 times [2018-10-23 21:12:01,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:01,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:01,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:01,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:01,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:01,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:12:01,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:12:01,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:12:01,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:12:01,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:12:01,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:12:01,562 INFO L87 Difference]: Start difference. First operand 1886 states and 2689 transitions. Second operand 6 states. [2018-10-23 21:12:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:02,754 INFO L93 Difference]: Finished difference Result 3816 states and 5597 transitions. [2018-10-23 21:12:02,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:12:02,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-10-23 21:12:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:02,772 INFO L225 Difference]: With dead ends: 3816 [2018-10-23 21:12:02,772 INFO L226 Difference]: Without dead ends: 1936 [2018-10-23 21:12:02,782 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 [2018-10-23 21:12:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2018-10-23 21:12:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1885. [2018-10-23 21:12:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-10-23 21:12:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2473 transitions. [2018-10-23 21:12:02,862 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2473 transitions. Word has length 105 [2018-10-23 21:12:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:02,863 INFO L481 AbstractCegarLoop]: Abstraction has 1885 states and 2473 transitions. [2018-10-23 21:12:02,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:12:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2473 transitions. [2018-10-23 21:12:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 21:12:02,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:02,869 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:12:02,870 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:02,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash 982006726, now seen corresponding path program 1 times [2018-10-23 21:12:02,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:02,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:02,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:02,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:02,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:03,154 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:12:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 21:12:03,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:12:03,388 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:12:03,389 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-10-23 21:12:03,392 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [105], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [269], [271], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 21:12:03,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:12:03,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:12:14,332 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:12:14,335 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-23 21:12:14,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:14,348 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:12:17,564 INFO L232 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 79.78% of their original sizes. [2018-10-23 21:12:17,565 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:12:19,039 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:12:19,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:12:19,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-10-23 21:12:19,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:12:19,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 21:12:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 21:12:19,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-23 21:12:19,042 INFO L87 Difference]: Start difference. First operand 1885 states and 2473 transitions. Second operand 12 states. [2018-10-23 21:12:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:31,951 INFO L93 Difference]: Finished difference Result 3825 states and 5031 transitions. [2018-10-23 21:12:31,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 21:12:31,951 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2018-10-23 21:12:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:31,963 INFO L225 Difference]: With dead ends: 3825 [2018-10-23 21:12:31,964 INFO L226 Difference]: Without dead ends: 1946 [2018-10-23 21:12:31,971 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-23 21:12:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2018-10-23 21:12:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1946. [2018-10-23 21:12:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-10-23 21:12:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2543 transitions. [2018-10-23 21:12:32,048 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2543 transitions. Word has length 113 [2018-10-23 21:12:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:32,049 INFO L481 AbstractCegarLoop]: Abstraction has 1946 states and 2543 transitions. [2018-10-23 21:12:32,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 21:12:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2543 transitions. [2018-10-23 21:12:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 21:12:32,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:32,056 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:12:32,057 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:32,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 368614065, now seen corresponding path program 1 times [2018-10-23 21:12:32,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:32,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:32,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:32,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:32,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:32,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:12:32,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:12:32,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2018-10-23 21:12:32,504 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [77], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [269], [271], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 21:12:32,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:12:32,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:12:53,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:12:53,232 INFO L272 AbstractInterpreter]: Visited 83 different actions 149 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 21:12:53,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:53,239 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:12:56,596 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 79.91% of their original sizes. [2018-10-23 21:12:56,597 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:13:03,354 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:13:03,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:13:03,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-23 21:13:03,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:13:03,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 21:13:03,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 21:13:03,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-10-23 21:13:03,356 INFO L87 Difference]: Start difference. First operand 1946 states and 2543 transitions. Second operand 14 states. [2018-10-23 21:13:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:13:19,316 INFO L93 Difference]: Finished difference Result 3970 states and 5212 transitions. [2018-10-23 21:13:19,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 21:13:19,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2018-10-23 21:13:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:13:19,326 INFO L225 Difference]: With dead ends: 3970 [2018-10-23 21:13:19,326 INFO L226 Difference]: Without dead ends: 2091 [2018-10-23 21:13:19,332 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 129 GetRequests, 58 SyntacticMatches, 44 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2018-10-23 21:13:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2018-10-23 21:13:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2084. [2018-10-23 21:13:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2018-10-23 21:13:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2697 transitions. [2018-10-23 21:13:19,387 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2697 transitions. Word has length 115 [2018-10-23 21:13:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:13:19,387 INFO L481 AbstractCegarLoop]: Abstraction has 2084 states and 2697 transitions. [2018-10-23 21:13:19,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 21:13:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2697 transitions. [2018-10-23 21:13:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 21:13:19,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:13:19,392 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:13:19,392 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:13:19,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:13:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash 538280163, now seen corresponding path program 1 times [2018-10-23 21:13:19,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:13:19,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:13:19,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:13:19,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:13:19,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:13:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:13:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:13:19,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:13:19,491 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:13:19,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 118 with the following transitions: [2018-10-23 21:13:19,492 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [269], [271], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 21:13:19,496 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:13:19,496 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:13:50,273 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:13:50,273 INFO L272 AbstractInterpreter]: Visited 83 different actions 148 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 21:13:50,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:13:50,275 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:13:55,359 INFO L232 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 80.24% of their original sizes. [2018-10-23 21:13:55,359 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:14:22,297 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:14:22,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:14:22,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-23 21:14:22,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:14:22,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 21:14:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 21:14:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-23 21:14:22,300 INFO L87 Difference]: Start difference. First operand 2084 states and 2697 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 21:16:01,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 21:16:01,278 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:16:01,285 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:16:01,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:16:01 BoogieIcfgContainer [2018-10-23 21:16:01,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:16:01,286 INFO L168 Benchmark]: Toolchain (without parser) took 253804.88 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 559.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:16:01,288 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 21:16:01,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.32 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:16:01,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:16:01,291 INFO L168 Benchmark]: Boogie Preprocessor took 92.06 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:16:01,291 INFO L168 Benchmark]: RCFGBuilder took 3198.07 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: 120.3 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:16:01,292 INFO L168 Benchmark]: TraceAbstraction took 249510.36 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 963.1 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -491.2 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. [2018-10-23 21:16:01,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 773.32 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.06 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3198.07 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: 120.3 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249510.36 ms. Allocated memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: 963.1 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -491.2 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 392]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 392). Cancelled while BasicCegarLoop was constructing difference of abstraction (2084states) and FLOYD_HOARE automaton (currently 24 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (160 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 249.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 136.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1210 SDtfs, 2951 SDslu, 690 SDs, 0 SdLazy, 3951 SolverSat, 773 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 407 GetRequests, 272 SyntacticMatches, 48 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 55.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2084occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 62.4s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9928004292574261 AbsIntWeakeningRatio, 0.2894736842105263 AbsIntAvgWeakeningVarsNumRemoved, 1495.4181286549708 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 73 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 209471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 138/169 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown