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/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:15:14,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:15:14,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:15:14,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:15:14,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:15:14,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:15:14,638 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:15:14,640 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:15:14,641 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:15:14,642 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:15:14,643 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:15:14,643 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:15:14,644 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:15:14,645 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:15:14,646 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:15:14,647 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:15:14,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:15:14,650 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:15:14,652 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:15:14,653 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:15:14,654 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:15:14,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:15:14,658 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:15:14,658 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:15:14,658 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:15:14,659 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:15:14,660 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:15:14,661 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:15:14,662 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:15:14,663 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:15:14,663 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:15:14,664 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:15:14,664 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:15:14,665 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:15:14,666 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:15:14,666 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:15:14,667 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 [2018-10-27 03:15:14,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:15:14,692 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:15:14,692 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:15:14,693 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:15:14,693 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:15:14,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:15:14,693 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:15:14,693 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:15:14,694 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:15:14,694 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:15:14,694 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:15:14,695 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:15:14,695 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:15:14,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:15:14,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:15:14,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:15:14,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:15:14,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:15:14,698 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:15:14,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:15:14,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:15:14,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:15:14,699 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:15:14,699 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:15:14,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:15:14,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:15:14,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:15:14,700 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:15:14,700 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:15:14,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:15:14,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:15:14,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:15:14,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:15:14,784 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:15:14,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-27 03:15:14,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2018f2a48/6be8bf8d01684e65b5e5ba86ba18c5c1/FLAGe0dcb514d [2018-10-27 03:15:15,582 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:15:15,583 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-27 03:15:15,606 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2018f2a48/6be8bf8d01684e65b5e5ba86ba18c5c1/FLAGe0dcb514d [2018-10-27 03:15:15,623 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2018f2a48/6be8bf8d01684e65b5e5ba86ba18c5c1 [2018-10-27 03:15:15,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:15:15,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:15:15,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:15:15,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:15:15,640 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:15:15,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:15:15" (1/1) ... [2018-10-27 03:15:15,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:15, skipping insertion in model container [2018-10-27 03:15:15,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:15:15" (1/1) ... [2018-10-27 03:15:15,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:15:15,748 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:15:16,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:15:16,484 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:15:16,786 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:15:16,810 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:15:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16 WrapperNode [2018-10-27 03:15:16,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:15:16,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:15:16,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:15:16,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:15:16,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:16,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:15:17,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:15:17,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:15:17,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:15:17,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (1/1) ... [2018-10-27 03:15:17,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:15:17,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:15:17,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:15:17,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:15:17,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (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 [2018-10-27 03:15:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:15:17,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:15:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:15:17,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:15:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:15:17,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:15:17,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:15:17,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:15:17,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:15:17,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:15:24,614 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:15:24,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:15:24 BoogieIcfgContainer [2018-10-27 03:15:24,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:15:24,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:15:24,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:15:24,620 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:15:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:15:15" (1/3) ... [2018-10-27 03:15:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:15:24, skipping insertion in model container [2018-10-27 03:15:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:16" (2/3) ... [2018-10-27 03:15:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:15:24, skipping insertion in model container [2018-10-27 03:15:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:15:24" (3/3) ... [2018-10-27 03:15:24,624 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-10-27 03:15:24,635 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:15:24,644 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:15:24,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:15:24,705 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:15:24,705 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:15:24,705 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:15:24,705 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:15:24,705 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:15:24,706 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:15:24,706 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:15:24,706 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:15:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 03:15:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-27 03:15:24,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:24,751 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] [2018-10-27 03:15:24,753 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:24,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:24,760 INFO L82 PathProgramCache]: Analyzing trace with hash -224629815, now seen corresponding path program 1 times [2018-10-27 03:15:24,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:24,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:24,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:24,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:24,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:25,327 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 03:15:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:25,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:25,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:15:25,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:25,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:15:25,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:15:25,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:25,392 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 03:15:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:32,670 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-27 03:15:32,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:15:32,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-27 03:15:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:32,718 INFO L225 Difference]: With dead ends: 1550 [2018-10-27 03:15:32,719 INFO L226 Difference]: Without dead ends: 1106 [2018-10-27 03:15:32,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-27 03:15:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-27 03:15:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-27 03:15:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-27 03:15:32,884 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 59 [2018-10-27 03:15:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:32,885 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-27 03:15:32,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:15:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-27 03:15:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 03:15:32,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:32,903 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, 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] [2018-10-27 03:15:32,903 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:32,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:32,904 INFO L82 PathProgramCache]: Analyzing trace with hash 311881044, now seen corresponding path program 1 times [2018-10-27 03:15:32,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:32,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:32,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:32,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:32,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:33,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:33,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:15:33,188 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:33,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:15:33,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:15:33,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:15:33,192 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-27 03:15:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:42,465 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-27 03:15:42,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:15:42,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-27 03:15:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:42,487 INFO L225 Difference]: With dead ends: 2245 [2018-10-27 03:15:42,488 INFO L226 Difference]: Without dead ends: 1489 [2018-10-27 03:15:42,492 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 [2018-10-27 03:15:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-27 03:15:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-27 03:15:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-27 03:15:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-27 03:15:42,556 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 132 [2018-10-27 03:15:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:42,557 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-27 03:15:42,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:15:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-27 03:15:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 03:15:42,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:42,561 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:15:42,561 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:42,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 827365732, now seen corresponding path program 1 times [2018-10-27 03:15:42,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:42,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:42,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:42,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:42,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:42,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:42,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:15:42,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:42,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:15:42,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:15:42,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:42,790 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-27 03:15:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:51,666 INFO L93 Difference]: Finished difference Result 5405 states and 8310 transitions. [2018-10-27 03:15:51,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:15:51,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-10-27 03:15:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:51,703 INFO L225 Difference]: With dead ends: 5405 [2018-10-27 03:15:51,703 INFO L226 Difference]: Without dead ends: 3954 [2018-10-27 03:15:51,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2018-10-27 03:15:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3951. [2018-10-27 03:15:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3951 states. [2018-10-27 03:15:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5460 transitions. [2018-10-27 03:15:51,842 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5460 transitions. Word has length 140 [2018-10-27 03:15:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:51,842 INFO L481 AbstractCegarLoop]: Abstraction has 3951 states and 5460 transitions. [2018-10-27 03:15:51,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:15:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5460 transitions. [2018-10-27 03:15:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 03:15:51,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:51,846 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, 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] [2018-10-27 03:15:51,847 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:51,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1388399790, now seen corresponding path program 1 times [2018-10-27 03:15:51,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:51,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:51,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:51,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:51,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:52,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:52,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:15:52,177 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:52,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:15:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:15:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:15:52,179 INFO L87 Difference]: Start difference. First operand 3951 states and 5460 transitions. Second operand 6 states. [2018-10-27 03:15:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:57,932 INFO L93 Difference]: Finished difference Result 9149 states and 12436 transitions. [2018-10-27 03:15:57,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:15:57,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-27 03:15:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:57,969 INFO L225 Difference]: With dead ends: 9149 [2018-10-27 03:15:57,970 INFO L226 Difference]: Without dead ends: 5204 [2018-10-27 03:15:57,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:15:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2018-10-27 03:15:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5146. [2018-10-27 03:15:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5146 states. [2018-10-27 03:15:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 6609 transitions. [2018-10-27 03:15:58,167 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 6609 transitions. Word has length 146 [2018-10-27 03:15:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:58,168 INFO L481 AbstractCegarLoop]: Abstraction has 5146 states and 6609 transitions. [2018-10-27 03:15:58,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:15:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 6609 transitions. [2018-10-27 03:15:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 03:15:58,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:58,177 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, 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] [2018-10-27 03:15:58,178 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:58,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:58,181 INFO L82 PathProgramCache]: Analyzing trace with hash 389844774, now seen corresponding path program 1 times [2018-10-27 03:15:58,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:58,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:58,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:58,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:58,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:58,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:15:58,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:15:58,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-27 03:15:58,621 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 03:15:58,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:15:58,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:16:01,200 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:16:01,201 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:16:01,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:16:01,217 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:16:02,754 INFO L227 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 78.48% of their original sizes. [2018-10-27 03:16:02,754 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:16:03,311 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-10-27 03:16:03,311 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:16:03,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:16:03,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-27 03:16:03,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:16:03,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:16:03,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:16:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:16:03,314 INFO L87 Difference]: Start difference. First operand 5146 states and 6609 transitions. Second operand 8 states. [2018-10-27 03:16:06,563 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:17:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:17:11,644 INFO L93 Difference]: Finished difference Result 10596 states and 13576 transitions. [2018-10-27 03:17:11,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:17:11,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-10-27 03:17:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:17:11,671 INFO L225 Difference]: With dead ends: 10596 [2018-10-27 03:17:11,672 INFO L226 Difference]: Without dead ends: 5456 [2018-10-27 03:17:11,683 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:17:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2018-10-27 03:17:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 5454. [2018-10-27 03:17:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5454 states. [2018-10-27 03:17:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 6926 transitions. [2018-10-27 03:17:11,813 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 6926 transitions. Word has length 171 [2018-10-27 03:17:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:17:11,813 INFO L481 AbstractCegarLoop]: Abstraction has 5454 states and 6926 transitions. [2018-10-27 03:17:11,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 03:17:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 6926 transitions. [2018-10-27 03:17:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-27 03:17:11,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:17:11,821 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:17:11,821 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:17:11,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash -34095748, now seen corresponding path program 1 times [2018-10-27 03:17:11,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:17:11,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:11,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:17:11,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:11,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:17:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:17:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:17:12,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:17:12,947 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:17:12,948 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-27 03:17:12,948 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 03:17:12,955 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:17:12,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:17:14,211 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:17:20,553 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:17:20,553 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:17:20,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:20,565 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:17:23,888 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 79.8% of their original sizes. [2018-10-27 03:17:23,888 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 03:19:16,022 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:19:16,027 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:19:16,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:19:16 BoogieIcfgContainer [2018-10-27 03:19:16,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:19:16,029 INFO L168 Benchmark]: Toolchain (without parser) took 240393.46 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,030 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. [2018-10-27 03:19:16,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1174.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 386.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,032 INFO L168 Benchmark]: Boogie Preprocessor took 244.63 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,033 INFO L168 Benchmark]: RCFGBuilder took 7171.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.9 MB). Peak memory consumption was 307.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,034 INFO L168 Benchmark]: TraceAbstraction took 231411.50 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,040 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 1174.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 386.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 244.63 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: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7171.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.9 MB). Peak memory consumption was 307.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231411.50 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was analyzing trace of length 268 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 99.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1470 SDtfs, 5133 SDslu, 1158 SDs, 0 SdLazy, 9140 SolverSat, 1982 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5454occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953712937109427 AbsIntWeakeningRatio, 0.10550458715596331 AbsIntAvgWeakeningVarsNumRemoved, 431.10091743119267 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 439 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 314565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 156/208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown