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_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:26:21,688 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:26:21,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:26:21,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:26:21,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:26:21,707 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:26:21,708 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:26:21,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:26:21,712 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:26:21,713 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:26:21,714 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:26:21,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:26:21,715 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:26:21,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:26:21,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:26:21,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:26:21,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:26:21,732 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:26:21,734 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:26:21,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:26:21,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:26:21,747 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:26:21,749 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:26:21,768 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 01:26:21,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:26:21,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:26:21,789 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:26:21,790 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:26:21,790 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:26:21,790 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:26:21,790 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:26:21,791 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:26:21,792 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:26:21,792 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:26:21,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:26:21,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:26:21,793 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:26:21,793 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:26:21,793 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:26:21,794 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:26:21,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:26:21,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:26:21,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:26:21,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:26:21,795 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:26:21,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:26:21,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:26:21,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:26:21,796 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:26:21,797 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:26:21,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:26:21,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:26:21,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:26:21,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:26:21,867 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:26:21,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06_true-unreach-call.c [2018-10-25 01:26:21,937 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/462f3c2d4/b2e18fdd47dd4411be4a49a0a265d5cc/FLAG146ab1a99 [2018-10-25 01:26:22,586 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:26:22,589 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label06_true-unreach-call.c [2018-10-25 01:26:22,604 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/462f3c2d4/b2e18fdd47dd4411be4a49a0a265d5cc/FLAG146ab1a99 [2018-10-25 01:26:22,623 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/462f3c2d4/b2e18fdd47dd4411be4a49a0a265d5cc [2018-10-25 01:26:22,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:26:22,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:26:22,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:26:22,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:26:22,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:26:22,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:26:22" (1/1) ... [2018-10-25 01:26:22,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4a2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:22, skipping insertion in model container [2018-10-25 01:26:22,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:26:22" (1/1) ... [2018-10-25 01:26:22,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:26:22,743 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:26:23,415 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:26:23,422 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:26:23,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:26:23,679 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:26:23,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23 WrapperNode [2018-10-25 01:26:23,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:26:23,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:26:23,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:26:23,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:26:23,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:23,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:23,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:26:23,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:26:23,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:26:23,985 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:26:23,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:23,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (1/1) ... [2018-10-25 01:26:24,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:26:24,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:26:24,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:26:24,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:26:24,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (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 01:26:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:26:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:26:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:26:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:26:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:26:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:26:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:26:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:26:29,353 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:26:29,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:26:29 BoogieIcfgContainer [2018-10-25 01:26:29,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:26:29,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:26:29,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:26:29,363 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:26:29,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:26:22" (1/3) ... [2018-10-25 01:26:29,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf82d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:26:29, skipping insertion in model container [2018-10-25 01:26:29,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:26:23" (2/3) ... [2018-10-25 01:26:29,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf82d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:26:29, skipping insertion in model container [2018-10-25 01:26:29,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:26:29" (3/3) ... [2018-10-25 01:26:29,368 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label06_true-unreach-call.c [2018-10-25 01:26:29,378 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:26:29,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:26:29,405 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:26:29,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:26:29,446 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:26:29,446 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:26:29,446 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:26:29,446 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:26:29,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:26:29,447 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:26:29,447 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:26:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:26:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-25 01:26:29,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:26:29,489 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:26:29,491 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:26:29,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:26:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash 712753892, now seen corresponding path program 1 times [2018-10-25 01:26:29,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:26:29,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:29,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:26:29,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:29,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:26:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:26:30,024 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:26:30,146 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 01:26:30,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:26:30,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:26:30,149 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:26:30,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:26:30,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:26:30,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:26:30,176 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-25 01:26:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:26:32,510 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-25 01:26:32,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:26:32,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-25 01:26:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:26:32,541 INFO L225 Difference]: With dead ends: 782 [2018-10-25 01:26:32,545 INFO L226 Difference]: Without dead ends: 487 [2018-10-25 01:26:32,559 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 [2018-10-25 01:26:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-25 01:26:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-25 01:26:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-25 01:26:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-25 01:26:32,661 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 70 [2018-10-25 01:26:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:26:32,662 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-25 01:26:32,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:26:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-25 01:26:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-25 01:26:32,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:26:32,672 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:26:32,673 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:26:32,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:26:32,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1109140143, now seen corresponding path program 1 times [2018-10-25 01:26:32,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:26:32,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:32,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:26:32,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:32,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:26:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:26:33,493 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-25 01:26:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:26:33,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:26:33,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 01:26:33,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:26:33,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:26:33,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:26:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:26:33,767 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-25 01:26:33,989 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-25 01:26:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:26:40,751 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-25 01:26:40,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:26:40,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2018-10-25 01:26:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:26:40,765 INFO L225 Difference]: With dead ends: 1760 [2018-10-25 01:26:40,765 INFO L226 Difference]: Without dead ends: 1284 [2018-10-25 01:26:40,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:26:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-25 01:26:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-25 01:26:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-25 01:26:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-25 01:26:40,853 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 145 [2018-10-25 01:26:40,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:26:40,854 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-25 01:26:40,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:26:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-25 01:26:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-25 01:26:40,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:26:40,864 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:26:40,864 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:26:40,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:26:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1947386976, now seen corresponding path program 1 times [2018-10-25 01:26:40,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:26:40,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:40,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:26:40,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:26:40,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:26:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:26:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 126 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:26:41,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:26:41,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:26:41,264 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-25 01:26:41,266 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:26:41,337 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:26:41,337 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:26:42,075 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:26:42,077 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:26:42,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:26:42,119 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:26:42,835 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.93% of their original sizes. [2018-10-25 01:26:42,836 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:26:43,081 INFO L413 sIntCurrentIteration]: We have 217 unified AI predicates [2018-10-25 01:26:43,081 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:26:43,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:26:43,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:26:43,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:26:43,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:26:43,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:26:43,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:26:43,085 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-10-25 01:28:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:37,258 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-25 01:28:37,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:28:37,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2018-10-25 01:28:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:37,266 INFO L225 Difference]: With dead ends: 2260 [2018-10-25 01:28:37,266 INFO L226 Difference]: Without dead ends: 1229 [2018-10-25 01:28:37,269 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 213 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 01:28:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-25 01:28:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-25 01:28:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-25 01:28:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-25 01:28:37,304 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 218 [2018-10-25 01:28:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:37,304 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-25 01:28:37,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:28:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-25 01:28:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-25 01:28:37,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:37,309 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:28:37,310 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:37,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 24877702, now seen corresponding path program 1 times [2018-10-25 01:28:37,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:37,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:37,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:37,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:37,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:28:37,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:37,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:28:37,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-25 01:28:37,723 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:28:37,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:28:37,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:28:39,285 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:28:39,286 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 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 01:28:39,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:39,293 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:28:39,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:39,293 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 01:28:39,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:39,307 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:28:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:39,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:28:50,274 WARN L179 SmtUtils]: Spent 8.46 s on a formula simplification. DAG size of input: 118 DAG size of output: 47 [2018-10-25 01:28:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:28:50,592 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:28:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:28:51,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:28:51,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 10 [2018-10-25 01:28:51,021 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:28:51,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:28:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:28:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2018-10-25 01:28:51,022 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-10-25 01:28:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:54,062 INFO L93 Difference]: Finished difference Result 2966 states and 4885 transitions. [2018-10-25 01:28:54,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:28:54,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-10-25 01:28:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:54,081 INFO L225 Difference]: With dead ends: 2966 [2018-10-25 01:28:54,081 INFO L226 Difference]: Without dead ends: 1935 [2018-10-25 01:28:54,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2018-10-25 01:28:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2018-10-25 01:28:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1935. [2018-10-25 01:28:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2018-10-25 01:28:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2922 transitions. [2018-10-25 01:28:54,141 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2922 transitions. Word has length 262 [2018-10-25 01:28:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:54,142 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 2922 transitions. [2018-10-25 01:28:54,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:28:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2922 transitions. [2018-10-25 01:28:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-25 01:28:54,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:54,150 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:54,151 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:54,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash 633050955, now seen corresponding path program 1 times [2018-10-25 01:28:54,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:54,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:54,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 01:28:54,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:28:54,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:28:54,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:28:54,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:28:54,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:28:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:28:54,418 INFO L87 Difference]: Start difference. First operand 1935 states and 2922 transitions. Second operand 3 states. [2018-10-25 01:28:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:56,793 INFO L93 Difference]: Finished difference Result 4926 states and 7784 transitions. [2018-10-25 01:28:56,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:28:56,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 288 [2018-10-25 01:28:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:56,816 INFO L225 Difference]: With dead ends: 4926 [2018-10-25 01:28:56,816 INFO L226 Difference]: Without dead ends: 3187 [2018-10-25 01:28:56,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:28:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2018-10-25 01:28:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3182. [2018-10-25 01:28:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3182 states. [2018-10-25 01:28:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4499 transitions. [2018-10-25 01:28:56,918 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4499 transitions. Word has length 288 [2018-10-25 01:28:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:56,919 INFO L481 AbstractCegarLoop]: Abstraction has 3182 states and 4499 transitions. [2018-10-25 01:28:56,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:28:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4499 transitions. [2018-10-25 01:28:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-25 01:28:56,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:56,933 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 01:28:56,933 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:56,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash -784775536, now seen corresponding path program 1 times [2018-10-25 01:28:56,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:56,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:56,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:56,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:56,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-25 01:28:57,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:57,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:28:57,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-25 01:28:57,358 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [618], [623], [625], [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 01:28:57,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:28:57,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:28:58,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:28:58,340 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:28:58,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:58,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:28:59,585 INFO L232 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 74.54% of their original sizes. [2018-10-25 01:28:59,585 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:29:00,178 INFO L413 sIntCurrentIteration]: We have 289 unified AI predicates [2018-10-25 01:29:00,178 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:29:00,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:29:00,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-25 01:29:00,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:29:00,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:29:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:29:00,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:29:00,180 INFO L87 Difference]: Start difference. First operand 3182 states and 4499 transitions. Second operand 15 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown