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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:30:23,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:30:23,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:30:23,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:30:23,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:30:23,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:30:23,580 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:30:23,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:30:23,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:30:23,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:30:23,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:30:23,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:30:23,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:30:23,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:30:23,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:30:23,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:30:23,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:30:23,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:30:23,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:30:23,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:30:23,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:30:23,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:30:23,612 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:30:23,630 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:30:23,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:30:23,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:30:23,663 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:30:23,663 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:30:23,663 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:30:23,664 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:30:23,664 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:30:23,664 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:30:23,664 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:30:23,665 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:30:23,665 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:30:23,665 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:30:23,665 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:30:23,665 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:30:23,666 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:30:23,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:30:23,668 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:30:23,668 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:30:23,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:30:23,668 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:30:23,669 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:30:23,669 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:30:23,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:30:23,669 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:30:23,669 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:30:23,670 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:30:23,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:30:23,670 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:30:23,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:30:23,671 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:30:23,671 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:30:23,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:30:23,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:30:23,672 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:30:23,673 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:30:23,673 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:30:23,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:30:23,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:30:23,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:30:23,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:30:23,778 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:30:23,779 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-25 01:30:23,851 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/133c56dcb/cb6a7359c6f04312b0a1898d3befd31a/FLAG1f8ee6355 [2018-10-25 01:30:24,477 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:30:24,478 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-25 01:30:24,494 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/133c56dcb/cb6a7359c6f04312b0a1898d3befd31a/FLAG1f8ee6355 [2018-10-25 01:30:24,516 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/133c56dcb/cb6a7359c6f04312b0a1898d3befd31a [2018-10-25 01:30:24,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:30:24,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:30:24,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:24,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:30:24,538 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:30:24,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:24" (1/1) ... [2018-10-25 01:30:24,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efdec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:24, skipping insertion in model container [2018-10-25 01:30:24,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:24" (1/1) ... [2018-10-25 01:30:24,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:30:24,644 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:30:25,296 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:25,301 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:30:25,562 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:25,584 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:30:25,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25 WrapperNode [2018-10-25 01:30:25,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:25,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:25,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:30:25,586 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:30:25,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:25,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:30:25,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:30:25,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:30:25,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:25,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (1/1) ... [2018-10-25 01:30:26,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:30:26,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:30:26,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:30:26,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:30:26,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (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 [2018-10-25 01:30:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:30:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:30:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:30:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:30:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:30:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:30:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:30:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:30:30,329 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:30:30,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:30 BoogieIcfgContainer [2018-10-25 01:30:30,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:30:30,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:30:30,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:30:30,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:30:30,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:30:24" (1/3) ... [2018-10-25 01:30:30,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:30, skipping insertion in model container [2018-10-25 01:30:30,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:25" (2/3) ... [2018-10-25 01:30:30,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:30, skipping insertion in model container [2018-10-25 01:30:30,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:30" (3/3) ... [2018-10-25 01:30:30,340 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label27_true-unreach-call.c [2018-10-25 01:30:30,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:30:30,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:30:30,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:30:30,423 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:30:30,423 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:30:30,423 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:30:30,424 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:30:30,424 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:30:30,424 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:30:30,424 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:30:30,424 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:30:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:30:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-25 01:30:30,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:30,466 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] [2018-10-25 01:30:30,469 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:30,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 266493369, now seen corresponding path program 1 times [2018-10-25 01:30:30,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:30,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:30,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:30,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:30,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:31,006 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 01:30:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:31,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:31,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:31,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:31,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:31,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:31,051 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:30:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:35,075 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-25 01:30:35,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:35,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-25 01:30:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:35,104 INFO L225 Difference]: With dead ends: 996 [2018-10-25 01:30:35,104 INFO L226 Difference]: Without dead ends: 697 [2018-10-25 01:30:35,113 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 [2018-10-25 01:30:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-25 01:30:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-25 01:30:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-25 01:30:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-25 01:30:35,206 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 49 [2018-10-25 01:30:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:35,207 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-25 01:30:35,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-25 01:30:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-25 01:30:35,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:35,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:35,215 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:35,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1615287979, now seen corresponding path program 1 times [2018-10-25 01:30:35,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:35,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:35,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:35,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:35,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:35,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:35,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:35,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:35,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:35,679 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-25 01:30:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:40,045 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-25 01:30:40,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:30:40,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-25 01:30:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:40,064 INFO L225 Difference]: With dead ends: 1725 [2018-10-25 01:30:40,064 INFO L226 Difference]: Without dead ends: 1250 [2018-10-25 01:30:40,070 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 [2018-10-25 01:30:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-25 01:30:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-25 01:30:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-25 01:30:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-25 01:30:40,174 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 122 [2018-10-25 01:30:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:40,175 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-25 01:30:40,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:30:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-25 01:30:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-25 01:30:40,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:40,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:40,187 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:40,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1254054036, now seen corresponding path program 1 times [2018-10-25 01:30:40,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:40,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:40,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:40,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:40,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:40,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:40,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:40,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:40,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:40,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:40,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:40,426 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-10-25 01:30:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:43,465 INFO L93 Difference]: Finished difference Result 3241 states and 4920 transitions. [2018-10-25 01:30:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:43,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-25 01:30:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:43,486 INFO L225 Difference]: With dead ends: 3241 [2018-10-25 01:30:43,487 INFO L226 Difference]: Without dead ends: 2016 [2018-10-25 01:30:43,496 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 [2018-10-25 01:30:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2018-10-25 01:30:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2001. [2018-10-25 01:30:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2018-10-25 01:30:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2887 transitions. [2018-10-25 01:30:43,568 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2887 transitions. Word has length 123 [2018-10-25 01:30:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:43,568 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2887 transitions. [2018-10-25 01:30:43,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2887 transitions. [2018-10-25 01:30:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-25 01:30:43,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:43,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:43,573 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:43,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1858238712, now seen corresponding path program 1 times [2018-10-25 01:30:43,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:43,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:43,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:43,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:43,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:43,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:43,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:30:43,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:43,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:30:43,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:30:43,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:30:43,733 INFO L87 Difference]: Start difference. First operand 2001 states and 2887 transitions. Second operand 5 states. [2018-10-25 01:30:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:47,560 INFO L93 Difference]: Finished difference Result 6980 states and 10605 transitions. [2018-10-25 01:30:47,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:30:47,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-25 01:30:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:47,606 INFO L225 Difference]: With dead ends: 6980 [2018-10-25 01:30:47,606 INFO L226 Difference]: Without dead ends: 4985 [2018-10-25 01:30:47,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:30:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2018-10-25 01:30:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4692. [2018-10-25 01:30:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2018-10-25 01:30:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6361 transitions. [2018-10-25 01:30:47,819 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6361 transitions. Word has length 125 [2018-10-25 01:30:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:47,820 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6361 transitions. [2018-10-25 01:30:47,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:30:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6361 transitions. [2018-10-25 01:30:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-25 01:30:47,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:47,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:47,833 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:47,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:47,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1707184253, now seen corresponding path program 1 times [2018-10-25 01:30:47,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:47,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:47,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:47,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:47,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:48,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:48,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:48,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-25 01:30:48,720 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:48,803 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:48,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:50,257 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:30:50,260 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:30:50,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:50,309 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:30:50,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:50,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:30:50,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:50,328 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:30:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:50,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:30:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:50,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:30:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:50,895 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:30:50,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-25 01:30:50,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:50,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:30:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:30:50,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:30:50,898 INFO L87 Difference]: Start difference. First operand 4692 states and 6361 transitions. Second operand 3 states. [2018-10-25 01:30:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:53,221 INFO L93 Difference]: Finished difference Result 10746 states and 15087 transitions. [2018-10-25 01:30:53,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:30:53,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-25 01:30:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:53,257 INFO L225 Difference]: With dead ends: 10746 [2018-10-25 01:30:53,257 INFO L226 Difference]: Without dead ends: 6060 [2018-10-25 01:30:53,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:30:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2018-10-25 01:30:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 5864. [2018-10-25 01:30:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5864 states. [2018-10-25 01:30:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7965 transitions. [2018-10-25 01:30:53,489 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7965 transitions. Word has length 181 [2018-10-25 01:30:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:53,490 INFO L481 AbstractCegarLoop]: Abstraction has 5864 states and 7965 transitions. [2018-10-25 01:30:53,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:30:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7965 transitions. [2018-10-25 01:30:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 01:30:53,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:53,505 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:30:53,506 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:53,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1205214562, now seen corresponding path program 1 times [2018-10-25 01:30:53,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:53,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:53,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:53,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:53,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:54,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:54,125 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:54,125 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-25 01:30:54,127 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:54,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:54,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:54,381 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:30:54,381 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:30:54,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:54,416 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:30:54,909 INFO L232 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 73.57% of their original sizes. [2018-10-25 01:30:54,910 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:30:55,158 INFO L413 sIntCurrentIteration]: We have 207 unified AI predicates [2018-10-25 01:30:55,159 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:30:55,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:30:55,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:30:55,160 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:55,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:55,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:55,161 INFO L87 Difference]: Start difference. First operand 5864 states and 7965 transitions. Second operand 6 states. [2018-10-25 01:32:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:39,015 INFO L93 Difference]: Finished difference Result 11914 states and 16143 transitions. [2018-10-25 01:32:39,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:32:39,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-25 01:32:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:39,044 INFO L225 Difference]: With dead ends: 11914 [2018-10-25 01:32:39,045 INFO L226 Difference]: Without dead ends: 6056 [2018-10-25 01:32:39,066 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2018-10-25 01:32:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 6054. [2018-10-25 01:32:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6054 states. [2018-10-25 01:32:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8166 transitions. [2018-10-25 01:32:39,222 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8166 transitions. Word has length 208 [2018-10-25 01:32:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:39,222 INFO L481 AbstractCegarLoop]: Abstraction has 6054 states and 8166 transitions. [2018-10-25 01:32:39,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:32:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8166 transitions. [2018-10-25 01:32:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-25 01:32:39,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:39,247 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:32:39,248 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:39,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1377061562, now seen corresponding path program 1 times [2018-10-25 01:32:39,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:39,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:39,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:39,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:39,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:32:39,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:39,910 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:39,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 326 with the following transitions: [2018-10-25 01:32:39,912 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:39,917 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:39,917 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:41,528 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:41,529 INFO L272 AbstractInterpreter]: Visited 127 different actions 377 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:32:41,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:41,534 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:41,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:41,534 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:41,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:41,549 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:41,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-25 01:32:41,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-25 01:32:42,045 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:32:42,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 01:32:42,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:42,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:32:42,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:32:42,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:42,047 INFO L87 Difference]: Start difference. First operand 6054 states and 8166 transitions. Second operand 3 states. [2018-10-25 01:32:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:43,775 INFO L93 Difference]: Finished difference Result 15590 states and 21899 transitions. [2018-10-25 01:32:43,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:32:43,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2018-10-25 01:32:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:43,826 INFO L225 Difference]: With dead ends: 15590 [2018-10-25 01:32:43,827 INFO L226 Difference]: Without dead ends: 9732 [2018-10-25 01:32:43,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 649 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2018-10-25 01:32:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 9731. [2018-10-25 01:32:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9731 states. [2018-10-25 01:32:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9731 states to 9731 states and 12854 transitions. [2018-10-25 01:32:44,087 INFO L78 Accepts]: Start accepts. Automaton has 9731 states and 12854 transitions. Word has length 325 [2018-10-25 01:32:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:44,087 INFO L481 AbstractCegarLoop]: Abstraction has 9731 states and 12854 transitions. [2018-10-25 01:32:44,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:32:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 9731 states and 12854 transitions. [2018-10-25 01:32:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-25 01:32:44,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:44,124 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:32:44,124 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:44,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:44,125 INFO L82 PathProgramCache]: Analyzing trace with hash 852578062, now seen corresponding path program 1 times [2018-10-25 01:32:44,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:44,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:44,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:44,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:44,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-10-25 01:32:44,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:44,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:32:44,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:44,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:32:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:32:44,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:32:44,492 INFO L87 Difference]: Start difference. First operand 9731 states and 12854 transitions. Second operand 3 states. [2018-10-25 01:32:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:46,846 INFO L93 Difference]: Finished difference Result 23080 states and 31865 transitions. [2018-10-25 01:32:46,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:32:46,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2018-10-25 01:32:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:46,919 INFO L225 Difference]: With dead ends: 23080 [2018-10-25 01:32:46,920 INFO L226 Difference]: Without dead ends: 13545 [2018-10-25 01:32:46,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:32:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2018-10-25 01:32:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 13344. [2018-10-25 01:32:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13344 states. [2018-10-25 01:32:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 17584 transitions. [2018-10-25 01:32:47,254 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 17584 transitions. Word has length 329 [2018-10-25 01:32:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:47,255 INFO L481 AbstractCegarLoop]: Abstraction has 13344 states and 17584 transitions. [2018-10-25 01:32:47,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:32:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 17584 transitions. [2018-10-25 01:32:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-25 01:32:47,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:47,297 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:32:47,297 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:47,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash 987900011, now seen corresponding path program 1 times [2018-10-25 01:32:47,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:47,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:47,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:47,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:47,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:48,295 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-25 01:32:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:48,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:48,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:48,762 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-25 01:32:48,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:48,768 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:48,768 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:59,896 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:59,896 INFO L272 AbstractInterpreter]: Visited 176 different actions 526 times. Merged at 7 different actions 22 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:32:59,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:59,902 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:59,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:59,902 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:59,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:59,918 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:00,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:00,736 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:00,878 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2018-10-25 01:33:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:02,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:02,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 8] total 22 [2018-10-25 01:33:02,008 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:02,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-25 01:33:02,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-25 01:33:02,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2018-10-25 01:33:02,009 INFO L87 Difference]: Start difference. First operand 13344 states and 17584 transitions. Second operand 17 states. [2018-10-25 01:33:02,796 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-10-25 01:33:03,399 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-10-25 01:33:05,466 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-10-25 01:33:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:12,541 INFO L93 Difference]: Finished difference Result 28998 states and 39181 transitions. [2018-10-25 01:33:12,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-25 01:33:12,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 333 [2018-10-25 01:33:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:12,612 INFO L225 Difference]: With dead ends: 28998 [2018-10-25 01:33:12,612 INFO L226 Difference]: Without dead ends: 15850 [2018-10-25 01:33:12,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 662 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=523, Invalid=1547, Unknown=0, NotChecked=0, Total=2070 [2018-10-25 01:33:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15850 states. [2018-10-25 01:33:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15850 to 15755. [2018-10-25 01:33:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15755 states. [2018-10-25 01:33:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15755 states to 15755 states and 20124 transitions. [2018-10-25 01:33:12,949 INFO L78 Accepts]: Start accepts. Automaton has 15755 states and 20124 transitions. Word has length 333 [2018-10-25 01:33:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:12,950 INFO L481 AbstractCegarLoop]: Abstraction has 15755 states and 20124 transitions. [2018-10-25 01:33:12,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-25 01:33:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 15755 states and 20124 transitions. [2018-10-25 01:33:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-25 01:33:12,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:12,996 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:33:12,996 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:12,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:12,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1952804260, now seen corresponding path program 1 times [2018-10-25 01:33:12,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:12,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:12,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:12,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:12,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:33:13,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:13,636 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:13,636 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-10-25 01:33:13,636 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [738], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:13,646 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:13,646 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:14,789 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:14,790 INFO L272 AbstractInterpreter]: Visited 134 different actions 398 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:33:14,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:14,799 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:14,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:14,799 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:14,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:14,809 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:14,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:33:15,183 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:33:15,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:15,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 01:33:15,459 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:15,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:33:15,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:33:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:33:15,460 INFO L87 Difference]: Start difference. First operand 15755 states and 20124 transitions. Second operand 7 states. [2018-10-25 01:33:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:17,329 INFO L93 Difference]: Finished difference Result 30821 states and 40729 transitions. [2018-10-25 01:33:17,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:33:17,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2018-10-25 01:33:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:17,386 INFO L225 Difference]: With dead ends: 30821 [2018-10-25 01:33:17,387 INFO L226 Difference]: Without dead ends: 15262 [2018-10-25 01:33:17,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 730 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:33:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15262 states. [2018-10-25 01:33:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15262 to 15098. [2018-10-25 01:33:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15098 states. [2018-10-25 01:33:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15098 states to 15098 states and 17740 transitions. [2018-10-25 01:33:17,694 INFO L78 Accepts]: Start accepts. Automaton has 15098 states and 17740 transitions. Word has length 365 [2018-10-25 01:33:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:17,695 INFO L481 AbstractCegarLoop]: Abstraction has 15098 states and 17740 transitions. [2018-10-25 01:33:17,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:33:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 15098 states and 17740 transitions. [2018-10-25 01:33:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-25 01:33:17,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:17,744 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:33:17,744 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:17,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1795217206, now seen corresponding path program 1 times [2018-10-25 01:33:17,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:17,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:17,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:17,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:17,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 5 proven. 86 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-25 01:33:18,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:18,228 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:18,228 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-10-25 01:33:18,228 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:18,232 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:18,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:44,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:44,110 INFO L272 AbstractInterpreter]: Visited 176 different actions 523 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:33:44,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:44,118 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:44,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:44,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:44,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:44,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:44,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:46,435 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_2 Int)) (let ((.cse1 (+ v_prenex_2 69157))) (let ((.cse0 (mod .cse1 299861))) (and (<= c_~a29~0 (+ .cse0 277)) (< .cse1 0) (<= |c_old(~a29~0)| v_prenex_2) (not (= .cse0 0)))))) (exists ((v_~a29~0_561 Int)) (let ((.cse2 (mod (+ v_~a29~0_561 69157) 299861))) (and (= .cse2 0) (<= c_~a29~0 (+ .cse2 300138)) (<= |c_old(~a29~0)| v_~a29~0_561)))) (exists ((v_prenex_1 Int)) (let ((.cse3 (+ v_prenex_1 69157))) (and (<= 0 .cse3) (<= |c_old(~a29~0)| v_prenex_1) (<= c_~a29~0 (+ (mod .cse3 299861) 300138)))))) is different from true [2018-10-25 01:33:47,263 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_561 Int)) (let ((.cse0 (mod (+ v_~a29~0_561 69157) 299861))) (and (= .cse0 0) (<= c_~a29~0 (+ .cse0 300138)) (<= 130 v_~a29~0_561)))) (exists ((v_prenex_1 Int)) (let ((.cse1 (+ v_prenex_1 69157))) (and (<= 0 .cse1) (<= c_~a29~0 (+ (mod .cse1 299861) 300138)) (<= 130 v_prenex_1)))) (exists ((v_prenex_2 Int)) (let ((.cse3 (+ v_prenex_2 69157))) (let ((.cse2 (mod .cse3 299861))) (and (<= c_~a29~0 (+ .cse2 277)) (< .cse3 0) (<= 130 v_prenex_2) (not (= .cse2 0))))))) is different from true [2018-10-25 01:33:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2018-10-25 01:33:48,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:48,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:48,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 16 [2018-10-25 01:33:48,693 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:48,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 01:33:48,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 01:33:48,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=136, Unknown=2, NotChecked=50, Total=240 [2018-10-25 01:33:48,694 INFO L87 Difference]: Start difference. First operand 15098 states and 17740 transitions. Second operand 13 states. [2018-10-25 01:33:51,972 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 8 [2018-10-25 01:33:57,533 WARN L179 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-25 01:34:09,816 WARN L179 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 41 DAG size of output: 17 [2018-10-25 01:34:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:10,358 INFO L93 Difference]: Finished difference Result 43484 states and 52558 transitions. [2018-10-25 01:34:10,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-25 01:34:10,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 364 [2018-10-25 01:34:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:10,474 INFO L225 Difference]: With dead ends: 43484 [2018-10-25 01:34:10,474 INFO L226 Difference]: Without dead ends: 28581 [2018-10-25 01:34:10,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 721 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=270, Invalid=719, Unknown=11, NotChecked=122, Total=1122 [2018-10-25 01:34:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28581 states. [2018-10-25 01:34:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28581 to 28235. [2018-10-25 01:34:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28235 states. [2018-10-25 01:34:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28235 states to 28235 states and 33051 transitions. [2018-10-25 01:34:11,100 INFO L78 Accepts]: Start accepts. Automaton has 28235 states and 33051 transitions. Word has length 364 [2018-10-25 01:34:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:11,101 INFO L481 AbstractCegarLoop]: Abstraction has 28235 states and 33051 transitions. [2018-10-25 01:34:11,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 01:34:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 28235 states and 33051 transitions. [2018-10-25 01:34:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-25 01:34:11,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:11,131 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:34:11,131 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:11,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash -664181589, now seen corresponding path program 1 times [2018-10-25 01:34:11,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:11,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:11,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:11,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:11,133 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:11,493 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 01:34:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-10-25 01:34:11,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:34:11,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:34:11,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:11,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:34:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:34:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:34:11,589 INFO L87 Difference]: Start difference. First operand 28235 states and 33051 transitions. Second operand 4 states. [2018-10-25 01:34:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:14,159 INFO L93 Difference]: Finished difference Result 59198 states and 71661 transitions. [2018-10-25 01:34:14,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:34:14,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 378 [2018-10-25 01:34:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:14,160 INFO L225 Difference]: With dead ends: 59198 [2018-10-25 01:34:14,160 INFO L226 Difference]: Without dead ends: 0 [2018-10-25 01:34:14,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:34:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-25 01:34:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-25 01:34:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-25 01:34:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-25 01:34:14,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 378 [2018-10-25 01:34:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:14,255 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-25 01:34:14,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:34:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-25 01:34:14,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-25 01:34:14,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-25 01:34:14,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:14,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,083 WARN L179 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 202 [2018-10-25 01:34:15,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,108 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,564 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,564 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-25 01:34:15,873 WARN L179 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 408 DAG size of output: 200 [2018-10-25 01:34:16,360 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 Received shutdown request... [2018-10-25 01:34:19,772 WARN L187 SmtUtils]: Removed 46 from assertion stack [2018-10-25 01:34:19,773 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-25 01:34:19,774 INFO L168 Benchmark]: Toolchain (without parser) took 235244.43 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-25 01:34:19,776 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. [2018-10-25 01:34:19,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1052.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:19,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 289.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:19,778 INFO L168 Benchmark]: Boogie Preprocessor took 135.95 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. [2018-10-25 01:34:19,779 INFO L168 Benchmark]: RCFGBuilder took 4318.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.8 MB). Peak memory consumption was 185.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:19,779 INFO L168 Benchmark]: TraceAbstraction took 229442.11 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-25 01:34:19,785 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 1052.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 289.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.95 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 4318.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.8 MB). Peak memory consumption was 185.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229442.11 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 132]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 343. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown