java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:05:12,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:05:12,680 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:05:12,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:05:12,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:05:12,700 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:05:12,702 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:05:12,704 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:05:12,706 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:05:12,708 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:05:12,709 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:05:12,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:05:12,713 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:05:12,714 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:05:12,717 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:05:12,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:05:12,725 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:05:12,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:05:12,734 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:05:12,736 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:05:12,737 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:05:12,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:05:12,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:05:12,757 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:05:12,785 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:05:12,786 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:05:12,787 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:05:12,788 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:05:12,788 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:05:12,788 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:05:12,789 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:05:12,792 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:05:12,793 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:05:12,793 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:05:12,793 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:05:12,793 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:05:12,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:05:12,795 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:05:12,795 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:05:12,795 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:05:12,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:05:12,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:05:12,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:05:12,796 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:05:12,796 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:05:12,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:05:12,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:05:12,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:05:12,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:05:12,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:05:12,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:05:12,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:05:12,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:05:12,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:05:12,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:05:12,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:05:12,801 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:05:12,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:05:12,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:05:12,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:05:12,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:05:12,880 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:05:12,880 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:05:12,881 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-10-23 22:05:12,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fe8ee78/c6df6fe379d34693a87296f87e0a448d/FLAGaf39cbcf6 [2018-10-23 22:05:13,524 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:05:13,528 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-10-23 22:05:13,546 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fe8ee78/c6df6fe379d34693a87296f87e0a448d/FLAGaf39cbcf6 [2018-10-23 22:05:13,565 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fe8ee78/c6df6fe379d34693a87296f87e0a448d [2018-10-23 22:05:13,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:05:13,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:05:13,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:13,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:05:13,590 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:05:13,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:13" (1/1) ... [2018-10-23 22:05:13,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e430f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:13, skipping insertion in model container [2018-10-23 22:05:13,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:13" (1/1) ... [2018-10-23 22:05:13,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:05:13,679 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:05:14,147 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:14,152 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:05:14,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:14,324 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:05:14,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14 WrapperNode [2018-10-23 22:05:14,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:14,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:14,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:05:14,326 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:05:14,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:14,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:05:14,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:05:14,551 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:05:14,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... [2018-10-23 22:05:14,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:05:14,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:05:14,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:05:14,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:05:14,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:05:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:05:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:05:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:05:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:05:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:05:17,980 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:05:17,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:17 BoogieIcfgContainer [2018-10-23 22:05:17,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:05:17,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:05:17,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:05:17,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:05:17,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:05:13" (1/3) ... [2018-10-23 22:05:17,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349058e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:17, skipping insertion in model container [2018-10-23 22:05:17,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:14" (2/3) ... [2018-10-23 22:05:17,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349058e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:17, skipping insertion in model container [2018-10-23 22:05:17,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:17" (3/3) ... [2018-10-23 22:05:17,991 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label29_false-unreach-call.c [2018-10-23 22:05:18,003 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:05:18,014 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:05:18,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:05:18,073 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:05:18,073 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:05:18,073 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:05:18,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:05:18,074 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:05:18,074 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:05:18,074 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:05:18,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:05:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-23 22:05:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 22:05:18,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:18,115 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] [2018-10-23 22:05:18,118 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:18,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash -246853596, now seen corresponding path program 1 times [2018-10-23 22:05:18,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:18,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:18,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:18,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:18,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:18,556 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:18,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:18,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:05:18,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:18,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:05:18,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:05:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:18,697 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-23 22:05:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:20,654 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-23 22:05:20,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:05:20,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-23 22:05:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:20,687 INFO L225 Difference]: With dead ends: 574 [2018-10-23 22:05:20,687 INFO L226 Difference]: Without dead ends: 356 [2018-10-23 22:05:20,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-23 22:05:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-23 22:05:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-23 22:05:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-23 22:05:20,773 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 22 [2018-10-23 22:05:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:20,773 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-23 22:05:20,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:05:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-23 22:05:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 22:05:20,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:20,780 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:20,780 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:20,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash -409159749, now seen corresponding path program 1 times [2018-10-23 22:05:20,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:20,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:20,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:20,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:20,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:21,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:21,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:05:21,135 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:21,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:05:21,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:05:21,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:05:21,139 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-23 22:05:24,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:24,521 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-23 22:05:24,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:05:24,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-10-23 22:05:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:24,532 INFO L225 Difference]: With dead ends: 1289 [2018-10-23 22:05:24,532 INFO L226 Difference]: Without dead ends: 939 [2018-10-23 22:05:24,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:05:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-23 22:05:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-23 22:05:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-23 22:05:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-23 22:05:24,602 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 105 [2018-10-23 22:05:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:24,603 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-23 22:05:24,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:05:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-23 22:05:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-23 22:05:24,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:24,610 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:24,612 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:24,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:24,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1170323611, now seen corresponding path program 1 times [2018-10-23 22:05:24,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:24,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:24,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:24,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:24,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:24,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:24,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:24,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:24,962 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-23 22:05:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:29,886 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-23 22:05:29,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:29,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-23 22:05:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:29,906 INFO L225 Difference]: With dead ends: 2537 [2018-10-23 22:05:29,907 INFO L226 Difference]: Without dead ends: 1617 [2018-10-23 22:05:29,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-23 22:05:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-23 22:05:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-23 22:05:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-23 22:05:29,999 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 121 [2018-10-23 22:05:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:29,999 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-23 22:05:30,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-23 22:05:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-23 22:05:30,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:30,015 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:30,015 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:30,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:30,016 INFO L82 PathProgramCache]: Analyzing trace with hash -367068693, now seen corresponding path program 1 times [2018-10-23 22:05:30,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:30,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:30,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:30,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:30,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:30,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:30,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:30,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:30,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:30,297 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-23 22:05:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:31,461 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-23 22:05:31,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:31,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-23 22:05:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:31,477 INFO L225 Difference]: With dead ends: 3508 [2018-10-23 22:05:31,477 INFO L226 Difference]: Without dead ends: 1928 [2018-10-23 22:05:31,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-23 22:05:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-23 22:05:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-23 22:05:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-23 22:05:31,550 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 145 [2018-10-23 22:05:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:31,551 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-23 22:05:31,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-23 22:05:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-23 22:05:31,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:31,557 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:31,558 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:31,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash -531546105, now seen corresponding path program 1 times [2018-10-23 22:05:31,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:31,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:31,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:31,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:31,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:31,982 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 22:05:32,185 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:05:32,639 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 22:05:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:32,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:05:32,945 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:05:32,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-23 22:05:32,948 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:05:33,014 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:05:33,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:05:35,766 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:05:50,013 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:05:50,015 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:05:50,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:50,029 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:05:52,783 INFO L232 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 77.19% of their original sizes. [2018-10-23 22:05:52,784 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:06:17,037 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:06:17,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:06:17,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-23 22:06:17,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:17,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 22:06:17,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 22:06:17,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-23 22:06:17,042 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 19 states. [2018-10-23 22:08:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:08:38,857 INFO L93 Difference]: Finished difference Result 4765 states and 6874 transitions. [2018-10-23 22:08:38,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 22:08:38,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 185 [2018-10-23 22:08:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:08:38,872 INFO L225 Difference]: With dead ends: 4765 [2018-10-23 22:08:38,872 INFO L226 Difference]: Without dead ends: 2882 [2018-10-23 22:08:38,882 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 24 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-10-23 22:08:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2018-10-23 22:08:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2671. [2018-10-23 22:08:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2018-10-23 22:08:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 3539 transitions. [2018-10-23 22:08:39,031 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 3539 transitions. Word has length 185 [2018-10-23 22:08:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:08:39,031 INFO L481 AbstractCegarLoop]: Abstraction has 2671 states and 3539 transitions. [2018-10-23 22:08:39,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-23 22:08:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 3539 transitions. [2018-10-23 22:08:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-23 22:08:39,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:08:39,038 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:08:39,039 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:08:39,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:08:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash -344008049, now seen corresponding path program 1 times [2018-10-23 22:08:39,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:08:39,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:08:39,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:08:39,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:08:39,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:08:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:08:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:08:39,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:08:39,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:08:39,318 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-23 22:08:39,318 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:08:39,327 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:08:39,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:08:42,320 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:08:50,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:08:50,830 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:08:50,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:08:50,837 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:08:53,271 INFO L232 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 73.54% of their original sizes. [2018-10-23 22:08:53,272 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:09:13,860 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:09:13,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:09:13,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-23 22:09:13,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:09:13,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 22:09:13,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 22:09:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:09:13,862 INFO L87 Difference]: Start difference. First operand 2671 states and 3539 transitions. Second operand 20 states. Received shutdown request... [2018-10-23 22:09:16,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 22:09:16,483 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:09:16,488 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:09:16,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:09:16 BoogieIcfgContainer [2018-10-23 22:09:16,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:09:16,489 INFO L168 Benchmark]: Toolchain (without parser) took 242910.68 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 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 554.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:16,491 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:09:16,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:16,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 224.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:16,493 INFO L168 Benchmark]: Boogie Preprocessor took 115.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:09:16,494 INFO L168 Benchmark]: RCFGBuilder took 3315.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:16,494 INFO L168 Benchmark]: TraceAbstraction took 238506.03 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 490.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:16,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 224.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3315.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238506.03 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 490.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (2671states) and FLOYD_HOARE automaton (currently 6 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 238.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 156.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 556 SDtfs, 4959 SDslu, 446 SDs, 0 SdLazy, 4811 SolverSat, 1170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 447 GetRequests, 325 SyntacticMatches, 57 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2671occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941616444253121 AbsIntWeakeningRatio, 0.12871287128712872 AbsIntAvgWeakeningVarsNumRemoved, 134.47029702970298 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 799 NumberOfCodeBlocks, 799 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 793 ConstructedInterpolants, 0 QuantifiedInterpolants, 878742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 264/268 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown